Age is not the only risk for severe coronavirus disease

Older people remain most at risk of dying as the new coronavirus continues its rampage around the globe, but they're far from the only ones vulnerable. One of many mysteries: Men seem to be faring worse than women.

And as cases skyrocket in the US and Europe, it's becoming more clear that how healthy you were before the pandemic began plays a key role in how you fare regardless of how old you are.

The majority of people who get COVID-19 have mild or moderate symptoms. But "majority" doesn't mean "all", and that raises an important question: Who should worry most that they'll be among the seriously ill? While it will be months before scientists have enough data to say for sure who is most at risk and why, preliminary numbers from early cases around the world are starting to offer hints.

NOT JUST THE OLD WHO GET SICK

Senior citizens undoubtedly are the hardest hit by Covid-19. In China, 80% of deaths were among people in their 60s or older, and that general trend is playing out elsewhere.

The greying of the population means some countries face particular risk. Italy has the world's second oldest population after Japan. While death rates fluctuate wildly early in an outbreak, Italy has reported more than 80% of deaths so far were among those 70 or older.

But, "the idea that this is purely a disease that causes death in older people we need to be very, very careful with," Dr. Mike Ryan, the World Health Organisation's emergencies chief, warned.

As much as 10% to 15% of people under 50 have moderate to severe infection, he said Friday.

100 PHOTOS
Coronavirus across the globe
See Gallery
Coronavirus across the globe
Chinese People's Liberation Army (PLA) soldiers wearing face masks to protect against the spread of the new coronavirus march past a banner depicting Chinese President Xi Jinping at their living squatter inside the Tiananmen Gate in Beijing during a plenary session of China's National People's Congress (NPC) at the Great Hall of the People in Beijing, Monday, May 25, 2020. (AP Photo/Andy Wong)
The Frecce Tricolori aerobatic squad of the Italian Air Force flies over Milan's Duomo cathedral, northern Italy, Monday, May 25, 2020 on the occasion of the 74th anniversary of the founding of the Italian Republic on June 2, 1946. This year the acrobatic squad will fly over several Italian cities to bring a message of unity and solidarity during the coronavirus pandemic.(AP Photo/Luca Bruno)
A supporter of the late Yugoslav communist president Josip Broz Tito wearing a mask to protect against coronavirus holds an old Yugoslav flag with the communist five-point star in front of memorial complex prior to a wreath laying ceremony in Belgrade, Serbia, Monday, May 25, 2020. People flocked to Tito's grave to mark the 128th anniversary of his birth. (AP Photo/Darko Vojinovic)
Shoppers maintain a safe social distance between each other as they wait in line to enter a food section of the Matsuya Ginza department store which partially reopens Monday, May 25, 2020, in Tokyo. Japan's Prime Minister Shinzo Abe is expected to remove a coronavirus state of emergency from Tokyo and four other remaining prefectures later in the day. Japanese words read as "For entrance only." (AP Photo/Eugene Hoshiko)
Bangladeshi Muslims offer Eid al-Fitr prayers in Dhaka, Monday, May 25, 2020. The holiday of Eid al-Fitr, the end of the fasting month of Ramadan, a usually joyous three-day celebration has been significantly toned down as coronavirus cases soar. (AP Photo/Al-emrun Garjon)
Indian policemen patrol during Eid al-Fitr near the Jama Mosque at the old quarters of New Delhi, India, Monday, May 25, 2020. The holiday of Eid al-Fitr, the end of the fasting month of Ramadan, a usually joyous three-day celebration has been significantly toned down as coronavirus cases soar. (AP Photo/Manish Swarup)
BRASILIA, BRAZIL - MAY 24: Supporters of Brazilian President Jair Bolsonaro wearing face masks with his face wave and shout slogans during a demonstration in favor of his government amidst the coronavirus pandemic in front of Planalto Palace on May 24, 2020 in Brasilia, Brazil. Brazil has over 352,000 confirmed positive cases of Coronavirus and 22,291 deaths. (Photo by Andressa Anholete/Getty Images)
Bosnian muslims, some wearing face masks to protect themselves from the COVID-19 infection, attend Eid al-Fitr prayers in Sarajevo, Bosnia, Sunday, May 24, 2020. Muslims worldwide are marking a muted religious festival of Eid al-Fitr, the end of the fasting month of Ramadan _ a usually joyous three-day celebration that has been significantly toned down due to the new coronavirus outbreak.(AP Photo/Kemal Softic)
A Muslim man wearing a protective mask prepares to pray outside the closed National Mosque while celebrating Eid al-Fitr, the Muslim festival marking the end the holy fasting month of Ramadan, amid the coronavirus outbreak, in Kuala Lumpur, Malaysia, Sunday, May 24, 2020. (AP Photo/Vincent Thian)
Worshippers wearing protective face masks offer Eid al-Fitr prayers outside a shrine to help prevent the spread of the coronavirus, in Tehran, Iran, Sunday, May 24, 2020. Muslims worldwide celebrate one of their biggest holidays under the long shadow of the coronavirus, with millions confined to their homes and others gripped by economic concerns during what is usually a festive time of shopping and celebration. (AP Photo/Ebrahim Noroozi)
Augsburg's Eduard Loewen celebrates with teammates after scoring his side's opening goal during the German Bundesliga soccer match between FC Schalke 04 and FC Augsburg at the Veltins-Arena in Gelsenkirchen, Germany, Sunday, May 24, 2020. The German Bundesliga becomes the world's first major soccer league to resume after a two-month suspension because of the coronavirus pandemic. (AP Photo/Martin Meissner, Pool)
Nuns and faithful respecting social distancing look at Pope Francis reciting the Regina Coeli noon prayer on a giant screen in St. Peter's Square, at the Vatican, Sunday, May 24, 2020. For the first time in months, well-spaced faithful gathered in St. Peter’s Square for the traditional Sunday papal blessing, casting their gaze at the window where the pope normally addresses the faithful, since the square had been closed due to anti-coronavirus lockdown measures. (AP Photo/Andrew Medichini)
Muslims, some wearing face masks and gloves to protect against coronavirus, observe social distancing guidelines as they attend Eid al-Fitr prayers in Grozny, Russia, Sunday, May 24, 2020. Muslims worldwide are marking a muted religious festival of Eid al-Fitr, the end of the fasting month of Ramadan, a usually joyous three-day celebration that has been significantly toned down due to the new coronavirus outbreak. (AP Photo/Musa Sadulayev)
MANAUS, BRAZIL - MAY 23: Melida Marquez, a 23 years old venezuelan woman holds a sign asking for job and help with her daughter Genesis, 6, at downtown Manaus on May 23 2020 in Manaus, Brazil. Melida arrived in Manaus a year ago, is pregnant of her fourth kid and has no protective masks. She uses the money got from pedestrians to buy food for her family. Brazil has now 330.890 people infected by the coronavirus disease (COVID-19) according to Health Ministry and became the the second country in the world with more cases. (Photo by Andre Coelho/Getty Images)
French bishop Monsignor Emmanuel Gobilliard wearing a protective face mask, prepares to lead the first mass in the Lyon Saint-Jean cathedral since the beginning of the lock down due to Covid 19 pandemic, on May 23, 2020. - France went into lockdown on March 17, to curb the spread of COVID-19. (Photo by JEFF PACHOUD / AFP) (Photo by JEFF PACHOUD/AFP via Getty Images)
A man stands outside his house, flanked by white cloths displayed to demand humanitarian aid during the home quarantine against the spread of the novel COVID-19 coronavirus, at Concepcion neighborhood in San Salvador on May 23, 2020. - El Salvador's Supreme Court of Justice (CSJ) revalidated on the eve the state of emergency decree -in force since last March- to face the COVID-19 pandemic, after intervening in a legal battle between the Legislative Assembly and the government of President Nayik Bukele. (Photo by Yuri CORTEZ / AFP) (Photo by YURI CORTEZ/AFP via Getty Images)
TURIN, ITALY - MAY 23: A man wearing a protective face mask looks at a clothing store with protective masks on mannequins on May 23, 2020 in Turin, Italy. Restaurants, bars, cafes, hairdressers and other shops have reopened, subject to social distancing measures, after more than two months of a nationwide lockdown meant to curb the spread of COVID-19. (Photo by Stefano Guidi/Getty Images)
TURIN, ITALY - MAY 23: A server wearing a protective mask serves a table of people in Piazza Vittorio Veneto on May 23, 2020 in Turin, Italy. On May 23, the Piedmont Region was able to reopen table seating at cafes and bars as long as people practice social distancing. Restaurants, bars, cafes, hairdressers and other shops have reopened, subject to social distancing measures, after more than two months of a nationwide lockdown meant to curb the spread of COVID-19. (Photo by Stefano Guidi/Getty Images)
SINGAPORE, SINGAPORE - MAY 23: Volunteers wearing protective face masks and face shields check in with operators of a factory converted to a dormitory on May 23, 2020 in Singapore. This reassurance operation is an initiative by Covid-19 Migrant Support Coalition, a non-governmental group in Singapore.(Photo by Ore Huiying/Getty Images)
A patient covers his face in the COVID-19 zone of a hospital in Atizapan, Mexico, on May 22, 2020, amid the new coronavirus pandemic. (Photo by PEDRO PARDO / AFP) (Photo by PEDRO PARDO/AFP via Getty Images)
A health worker checks a patient at the COVID-19 zone of a hospital in Atizapan, Mexico, on May 22, 2020, amid the new coronavirus pandemic. (Photo by PEDRO PARDO / AFP) (Photo by PEDRO PARDO/AFP via Getty Images)
The poster dedicated by Armani to all Italian nurses in Milan on May 22, 2020 in Milan, Italy. Restaurants, bars, cafes, hairdressers and other shops have reopened, subject to social distancing measures, after more than two months of a nationwide lockdown meant to curb the spread of Covid-19 (Photo by Mairo Cinquetti/NurPhoto via Getty Images)
MADRID, SPAIN - MAY 22: Two women are seen talking at the town of Griñón during day 69th of the state of alarm decreed as a result of the coronavirus and still phase 0 of the reduction of confinement established by the Government on May 22, 2020 in Madrid, Spain. (Photo by Eduardo Parra/Europa Press via Getty Images)
BEIJING, CHINA - MAY 22: Chinese women from the country's ethnic minority groups wear protective masks as as they talk before the opening of the National People's Congress at the Great Hall of the People on May 22, 2020 in Beijing, China. China opened its annual parliamentary gathering, known as 'The Two Sessions', at the Great Hall of the People on May 21 after being postponed at the heigh of the coronavirus outbreak in China earlier this year. (Photo by Kevin Frayer/Getty Images)
Paramilitary police officers stand guard in front of a poster of late communist leader Mao Zedong on a street south of the Great Hall of the People during the opening session of the National People's Congress (NPC) in Beijing on May 22, 2020. - China moved to impose stringent new security laws on restive Hong Kong as its coronavirus-delayed parliamentary session opened on May 22 with a warning from Premier Li Keqiang of the "immense" challenges facing the world's second-largest economy. (Photo by GREG BAKER / AFP) (Photo by GREG BAKER/AFP via Getty Images)
A police officer issues a pro-democracy protester (C) with a fine for breaking government-imposed social distancing rules against the COVID-19 coronavirus, during a march from outside the Western Police Station to the Chinese Liaison Office in Hong Kong on May 22, 2020. - A proposal to enact new Hong Kong security legislation was submitted to China's rubber-stamp on May 22, state media said, a move expected to fan fresh protests in the semi-autonomous financial hub. (Photo by Anthony WALLACE / AFP) (Photo by ANTHONY WALLACE/AFP via Getty Images)
MOSCOW, RUSSIA - MAY 21, 2020: Dmitry Nikitenko (L), first deputy general director of the Pirogov National Medical and Surgical Center, and Brock Bierman, Assistant Administrator at the United States Agency for International Development (USAID), by a McDonnell Douglas/Boeing C-17 Globemaster III military transport aircraft of the United States Air Force at Vnukovo-3 Airport. The plane has delivered medical ventilators for the Pirogov National Medical and Surgical Center. The USA plans to donate 200 ventilators to Russia amid the COVID-19 coronavirus pandemic. Valery Sharifulin/TASS (Photo by Valery Sharifulin\TASS via Getty Images)
A group of people with face masks on May 21, 2020 in Barcelona, Spain, Since today, protection mask are mandatory in all Spain except in some cases. The government put this measure to protect the citizen against the Covid-19 virus. (Photo by Adria Salido Zarco/NurPhoto via Getty Images)
AUSTIN, TEXAS - MAY 20: Residents swim, paddle board and kayak in Barton Creek on May 20, 2020 in Austin, Texas. Texas Governor Greg Abbott announced that bars, wine tasting rooms, bowling alleys, skating rinks, bingo halls, aquariums, and equestrian events will be allowed to open on Friday, May 22nd despite a surge in confirmed coronavirus (COVID-19) cases in the state. (Photo by Tom Pennington/Getty Images)
A Sri Lankan Health personnel in protective gear collects nasal swab sample from a worker near the Manning Market, Colombo, Sri Lanka, on May 20, 2020. (Photo by Tharaka Basnayaka/NurPhoto via Getty Images)
A worker wearing a protective suit and mask, disinfects a tramway at the Solea transport depot in Mulhouse, eastern France, on May 20, 2020, as France eases lockdown measures taken to curb the spread of the COVID-19 pandemic, caused by the novel coronavirus. (Photo by SEBASTIEN BOZON / AFP) (Photo by SEBASTIEN BOZON/AFP via Getty Images)
GUAYAQUIL, ECUADOR - MAY 20: Municipal workers disinfect at Pedro Carbo street on May 20, 2020 in Guayaquil, Ecuador. After 63 days of strict lockdown to curb spread of COVID-19, Guayaquil starts a new phase easing measures in some activities and industries. The capital city of Guayas province is one of the most affected territories in Latin America. (Photo by Eduardo Maquilon/Getty Images/Getty Images)
BARCELONA, SPAIN - MAY 20: A couple wearing a face mask and they entertain themselves with their smartphone during the night at Park Guell by architect Antoni Gaudi as it opens it's doors to neighborhood residents for the first day since March 13 on May 20, 2020 in Barcelona, Spain. Some parts of Spain have entered the so-called "Phase One" or "Phase Two" transitions from its coronavirus lockdown, allowing many shops to reopen as well as restaurants who serve customers outdoors. Locations that were harder hit by coronavirus (Covid-19), such as Madrid and Barcelona, remain in a stricter quarantine. (Photo by Miquel Benitez/Getty Images)
A child wearing a face mask amid concerns of the COVID-19 coronavirus commutes on a train in Tokyo on May 19, 2020. (Photo by CHARLY TRIBALLEAU / AFP) (Photo by CHARLY TRIBALLEAU/AFP via Getty Images)
A worker sprays disinfectant in a classroom at a high school in Seoul on May 19, 2020. - South Korea has been held up as a global model in how to curb the coronavirus, but a spike of new cases, driven by a nightclub cluster in Seoul's Itaewon district -- including several gay clubs -- forced authorities to delay last week's planned re-opening of schools for a week. (Photo by Jung Yeon-je / AFP) (Photo by JUNG YEON-JE/AFP via Getty Images)
HANOI, VIETNAM - MAY 19: Motorbike riders with face masks are stuck in traffic during the morning peak hour on May 19, 2020 in Hanoi, Vietnam. Though some restrictions remain in place, Vietnam has lifted the ban on certain entertainment facilities and non-essential businesses, including pubs, cinemas and spas & other tourist attractions to recover domestic tourism. On April 23, the Ministry of Transport started to increase domestic flights and trains to major destinations with limited passenger capacity. As of May 19, Vietnam has confirmed 324 cases of coronavirus disease (COVID-19 ) with no deaths in the country, 263 fully recovered and no new case caused by community transmission for 33 days. (Photo by Linh Pham/Getty Images)
A passenger carrying his belongings walks to board on a bus as Telangana State Road Transport Corporation (TSRTC) resumed bus services after the government eased a nationwide lockdown imposed as a preventive measure against the COVID-19 coronavirus, at Jubilee Bus Station (JBS) in Secunderabad, the twin city of Hyderabad on May 19, 2020. (Photo by NOAH SEELAM / AFP) (Photo by NOAH SEELAM/AFP via Getty Images)
People wearing face masks walk past the China Central Television (CCTV) headquarters building (R) and a cellphone tower (L, back), used for a 5G network, on a street in Beijing on May 19, 2020. - The annual meeting of the National Peoples Congress, Chinas rubber stamp legislature, opens on May 22, after a two month delay due to the outbreak of the COVID-19 coronavirus pandemic. (Photo by NICOLAS ASFOURI / AFP) (Photo by NICOLAS ASFOURI/AFP via Getty Images)
People wearing face masks amid concerns of the COVID-19 coronavirus walk in a train station in Tokyo on May 19, 2020. (Photo by CHARLY TRIBALLEAU / AFP) (Photo by CHARLY TRIBALLEAU/AFP via Getty Images)
People pass by and notice cartoon dragon dolls the restaurant uses as space keepers in their booths for social distancing to help curb the spread of the coronavirus at shopping mall in Bangkok, Thailand, Monday, May 18, 2020. Thai authorities allowed department stores, shopping malls and other businesses to reopen from May 17, selectively easing restrictions meant to combat the coronavirus. (AP Photo/Sakchai Lalit)
Father Jose Maria Galvan, wearing a sanitary mask to prevent the spread of COVID-19 opens the door for the morning mass at St. Eugenio Church, in Rome, Monday, May 18, 2020. Italy partially lifted sanitary restrictions Monday after a two-month coronavirus lockdown. (AP Photo/Alessandra Tarantino)
MOSCOW, RUSSIA - MAY 18, 2020: Russian Emergency Situations Ministry employees carry out disinfection of Kiyevsky Railway Station amid the COVID-19 coronavirus pandemic. Vyacheslav Prokofyev/TASS (Photo by Vyacheslav Prokofyev\TASS via Getty Images)
Commuters, some wearing protective masks to protect against coronavirus travel on a Jubilee Line underground train, in London, Monday, May 18, 2020. Britain's Prime Minister Boris Johnson announced last Sunday that people could return to work if they could not work from home. (AP Photo/Alberto Pezzali)
Faithful wearing gloves and face masks to prevent the spread of COVID-19, pray during the morning mass at St. Eugenio Church, in Rome, Monday, May 18, 2020. Italy partially lifted sanitary restrictions Monday after a two-month coronavirus lockdown. (AP Photo/Alessandra Tarantino)
A supporter of Brazil's President Jair Bolsonaro flies a Brazilian flag during a protest against the Supreme Court and Brazil's National Congress, and to back Bolsonaro's open-the-economy drive amid the pandemic, in Brasilia, Brazil, Sunday, May 17, 2020. Bolsonaro greeted hundreds of supporters who gathered at the presidential residence to back his open-the-economy drive even as the COVID-19 pandemic sweeps across the country. (AP Photo/Andre Borges)
A Christian wears a protective mask as she attends Mass while maintaining a social distance at the Cathedral Church of the Resurrection in Lahore, Pakistan, Sunday, May 17, 2020. Pakistani churches welcomed worshippers for Sunday Mass for the first time in nearly two months, as authorities eased restrictions imposed in March to limit the spread of coronavirus. (AP Photo/K.M. Chaudary)
Migrant workers from other states trying to return to their homes stand in queue as they wait for transportation to a train station in Ahmedabad, India, Sunday, May 17, 2020. Tens of thousands of migrant laborers have been returning from big cities to their villages after losing jobs because of a countrywide lockdown imposed in late March to contain the spread of the coronavirus. (AP Photo/Ajit Solanki)
An Orthodox priest swings a chain censer in front of faithful during a Sunday mass taking place outside a church, in Athens, Sunday, May 17, 2020. Greek government allowed churches throughout the country to reopen their doors to faithful on Sunday, a decision that applies to regular services and ceremonies like baptisms and weddings. (AP Photo/Yorgos Karahalis)
BROOKLYN, NY - MAY 16: Views of New Yorkers as they make the come-back from the Covid-19 epidemic by heading to Coney Island Beach upon the arrival of the Memorial Day 2020 in Brooklyn, New York City on May 16, 2020. Credit: mpi43/MediaPunch /IPX
Footballs are disinfected during the Bundesliga soccer match between Duesseldorf and Paderborn in the Merkur Spiel-Arena, Duesseldorf, Germany, Saturday, May 16, 2020. The German Bundesliga becomes the world's first major soccer league to resume after a two-month suspension because of the coronavirus pandemic. (Sascha Schuermann/AFP pool via AP)
Police officers arrest a man during a demonstration against restrictions and measures to prevent the spread of the new coronavirus in Berlin, Germany, Saturday, May 16, 2020. (AP Photo/Michael Sohn)
Patients sit on the ground as they wait in queue outside of a hospital for Covid-19 test in Dhaka, Bangladesh on Tuesday, May. 16, 2020. (Photo by Syed Mahamudur Rahman/NurPhoto via Getty Images)
HARRISBURG, PA - MAY 15: Demonstrators rally outside the Pennsylvania Capitol Building to protest the continued closure of businesses due to the coronavirus pandemic on May 15, 2020 in Harrisburg, Pennsylvania. Pennsylvania Governor Tom Wolf has introduced a color tiered strategy to reopen the state with most areas not easing restrictions until June 4. (Photo by Mark Makela/Getty Images)
AUCKLAND, NEW ZEALAND - MAY 16: People return to shop and dine along Ponsonby Road on May 16, 2020 in Auckland, New Zealand. New Zealand has eased restrictions under COVID-19 Alert Level 2, which is being introduced in three stages. Restaurants, cinemas, retail, playgrounds and gyms have been allowed to open with physical distancing and strict hygiene measures in place from Thursday 14 May. Public gatherings are permitted for up to 10 people and New Zealanders are now able to travel domestically. Schools and early childhood centres will open from Monday 18 May while bars will be allowed to reopen from Thursday 21 May. New Zealand was placed under full lockdown on March 26 in response to the coronavirus (COVID-19) pandemic. (Photo by Phil Walter/Getty Images)
MOSCOW, RUSSIA - MAY 16, 2020: Flusher trucks disinfecting Novoarbatsky Bridge amid the ongoing COVID-19 pandemic. Gavriil Grigorov/TASS (Photo by Gavriil Grigorov\TASS via Getty Images)
OSTRAVA, CZECH REPUBLIC - MAY 15: People enjoy the first largest live car concert featuring the band Mirai in Ostrava, Czech Republic on May 15, 2020. The band played their car concert in an industrial environment in the Lower Vitkovice area. The organizers stated that the total capacity of 500 cars was sold out. Viewers were not allowed to leave their vehicles due to government measures to prevent the spread of coronavirus (COVID-19). Only horns, turn signals and lights were allowed to support the band. (Photo by Lukas Kabon/Anadolu Agency via Getty Images)
Patients lie down on the ground as they wait in queue outside of a hospital for Covid-19 test in Dhaka, Bangladesh on Tuesday, May. 16, 2020. (Photo by Syed Mahamudur Rahman/NurPhoto via Getty Images)
AUCKLAND, NEW ZEALAND - MAY 16: COVID-19 signs educate visitors at Matakana Village Farmers Market on May 16, 2020 in Auckland, New Zealand. The Matakana Village Farmers Market has reopened with new COVID-19 safety measures in place following the easing of restrictions across New Zealand under Alert Level 2, which came into effect from Thursday 14 May. Entry points to the market have been limited to help control the number of people attending at one time, with market staff also monitoring people gathering and social distancing measures and implementing a contact tracing register for visitors. All stall holders are required to sterilise their areas and have hand sanitiser available, and no samples are able to be offered to customers. COVID-19 Alert Level 2 measures are being introduced in three stages with public venues, restaurants, cinemas, retail, playgrounds and gyms have been allowed to open with physical distancing and strict hygiene measures in place from Thursday 14 May. Public gatherings are permitted for up to 10 people and New Zealanders are now able to travel domestically. Schools and early childhood centres will open from Monday 18 May while bars will be allowed to reopen from Thursday 21 May. New Zealand was placed under full lockdown on March 26 in response to the coronavirus (COVID-19) pandemic. (Photo by Fiona Goodall/Getty Images)
People in a line wait for verification before receiving food and other essentials from the members of the US Army National Guard at a food pantry amid the coronavirus (covid-19) pandemic in Queens borough of New York City. (Photo by Ron Adar / SOPA Images/Sipa USA)
CASCAIS, PORTUGAL - MAY 15: Hairdresser Maria Tomaz (Kina) and her client wear protective gear during a beauty session at Nuance Salon due to COVID-19 Coronavirus pandemic on May 15, 2020 in Cascais, Portugal. The government downgraded, as of midnight of May 02, the country's state of emergency to a state of calamity, permitting certain non-essential services and commercial activities to reassume as the epidemic appears to be under control. (Photo by Horacio Villalobos#Corbis/Corbis via Getty Images)
MOSCOW REGION, RUSSIA - MAY 15, 2020: Taking a sample of a serviceman who has arrived from Italy for a COVID-19 coronavirus infection test at Chkalovsky Airport. An Ilyushin Il-76 plane of the Russian Aerospace Forces has brought back the last team of Russian military specialists who helped in fighting the COVID-19 coronavirus pandemic in Italy. Specialists of the Russian Defense Ministry and Italian servicemen carried out disinfection of care homes and other facilities in Italy's Lombardy Region and Province of Brescia. Valery Sharifulin/TASS (Photo by Valery Sharifulin\TASS via Getty Images)
Nurses wearing protective face masks participate in a protest with signs bearing the names of healthcare professionals who died from the coronavirus disease (COVID-19) amid the COVID-19 outbreak in Brasilia, Brazil May 12, 2020. REUTERS/Adriano Machado TPX IMAGES OF THE DAY
ISTANBUL, TURKEY - MAY 13: A health official, wearing protective suit and mask, from Istanbul Health Directorate Provincial Ambulance Service Chief Physician is seen with a patient in an ambulance in Istanbul, Turkey on May 13, 2020. Medical workers in the 112 Medical Emergency Centre, fighting against coronavirus (Covid-19) pandemic, work in 24-hour shifts. (Photo by Arif Hudaverdi Yaman/Anadolu Agency via Getty Images)
A man reacts while being tested for the COVID-19 coronavirus in a neighborhood in Wuhan, in Chinas central Hubei province on May 15, 2020. - Nervous residents of China's pandemic epicentre of Wuhan queued up across the city to be tested for the coronavirus on May 14 after a new cluster of cases sparked a mass screening campaign. (Photo by Hector RETAMAL / AFP) (Photo by HECTOR RETAMAL/AFP via Getty Images)
TOKYO, JAPAN - MAY 15: A RakuRo autonomous self-driving robot developed by ZMP Inc. moves through the Chiba Zoological Park during a rehearsal for an online virtual tour event tomorrow, on May 15, 2020 in Chiba, Japan. Robot maker ZMP and Chiba Zoological Park, which temporarily closed due to the Coronavirus (COVID-19) pandemic, will be holding an online event tomorrow where children quarantined at home can virtually tour the zoo through a remote controlled robot with a 360-degree camera. (Photo by Tomohiro Ohsumi/Getty Images)
Men carry boxes to be installed for the coffins at the Sao Pedro municipal cemetery, amid the coronavirus disease (COVID-19) outbreak, in Sao Paulo, Brazil, May 14, 2020.REUTERS/Amanda Perobelli TPX IMAGES OF THE DAY
Migrant workers pray in their dormitory during the holy month of Ramadan, amid the coronavirus disease (COVID-19) outbreak, in Singapore May 8, 2020. Picture taken May 8, 2020. REUTERS/Edgar Su
A health worker dressed in protective gear uses a swab to collect sample from a man for a coronavirus test at Kalimati vegetable market during a government-imposed nationwide lockdown as a preventive measure against the spread of the COVID-19 coronavirus, in Kathmandu on May 14 2020. (Photo by PRAKASH MATHEMA / AFP) (Photo by PRAKASH MATHEMA/AFP via Getty Images)
An employee of the RATP (Autonomous Parisian Transportation Administration) distributes hydroalcoholic gel to commuters walking out of a metro station in Paris on May 14, 2020 during the ease of lockdown measures taken to curb the spread of the COVID-19 (the novel coronavirus). (Photo by Philippe LOPEZ / AFP) (Photo by PHILIPPE LOPEZ/AFP via Getty Images)
A boy washes his hands after arriving in his classroom at the Saint-Exupery school in the Paris' suburb of La Courneuve on May 14, 2020 as primary schools in France re-open this week after an almost two-month closure due to the lockdown imposed since March 17 to curb the spread of the COVID-19 disease caused by the novel coronavirus. (Photo by Martin BUREAU / AFP) (Photo by MARTIN BUREAU/AFP via Getty Images)
A migrant worker waves from the window of a special train going to Gorakhpur in Uttar Pradesh state back to his hometown after the government eased a nationwide lockdown imposed as a preventive measure against the COVID-19 coronavirus, in Amritsar on May 14, 2020. (Photo by NARINDER NANU / AFP) (Photo by NARINDER NANU/AFP via Getty Images)
Migrant workers wait outside the Chhatrapati Shivaji Maharaj Terminus railway station before boarding trains to return to their homes after the government eased a nationwide lockdown as a preventive mearure against the COVID-19 coronavirus, in Mumbai on May 14, 2020. (Photo by Punit PARANJPE / AFP) (Photo by PUNIT PARANJPE/AFP via Getty Images)
ANKARA, TURKEY - MAY 14, 2020: An elderly woman wearing a face shield walks in a street in the city centre amid the coronavirus COVID-19 outbreak.- PHOTOGRAPH BY Altan Gocher / Barcroft Studios / Future Publishing (Photo credit should read Altan Gocher/Barcroft Media via Getty Images)
TEL AVIV, ISRAEL - MAY 14: An ultra-Orthodox Jewish man checks-in for an international flight at Ben Gurion Airport on May 14, 2020 near Tel Aviv, Israel. Authorities are preparing for the full reopening of the airport, Israel's main gateway, by June 1, 2020 as coronavirus cases across the country continue to decline. According to reports only visitors from countries with low infection rates and compulsory protective equipment laws will be granted entry while Israelis will need to report to the Health Ministry before traveling abroad. (Photo by David Silverman/Getty Images)
Construction workers wearing face masks travel in a back of a crew cab in Bangkok, Thailand, Wednesday, May 13, 2020. Thai government continue to ease restrictions related to running business in capital Bangkok that were imposed weeks ago to combat the spread of COVID-19. (AP Photo/Gemunu Amarasinghe)
A child walks with an adult through a ray of light in a narrow ally in Bangkok, Thailand, Wednesday, May 13, 2020. The Thai government continues to ease restrictions on small businesses that were imposed weeks ago to combat the spread of COVID-19. (AP Photo/Gemunu Amarasinghe)
Hairdresser Hatem Somai, wearing a face mask, cuts a client's hair in Tunis, Wednesday May 13, 2020. Shops reopened Monday in Tunisia and the country is expected to reduce the hours of its nightly curfew imposed to slow the spread of the coronavirus. (AP Photo/Hassene Dridi)
A man sprays disinfectant as he sanitizes Santa Maria in Trastevere Basilica to prevent the spread of COVID-19, in Rome Wednesday, May 13, 2020. Italy partially lifted lockdown restrictions last week after a two-month lockdown and from May 18 churches are expected to reopen to the public for masses. (AP Photo/Alessandra Tarantino)
Zeynep Berra Gun, 6, wearing a face mask for protection against the coronavirus, plays with a dog in Kugulu public garden, in Ankara, Turkey, Wednesday, May 13, 2020. Parks filled with the sound of children as Turkey allowed kids aged 14 and under to leave homes for the first time in 40 days. The country's youngest population were allowed to venture out for four hours between 11:00 am and 3:00 pm on Wednesday as Turkey eased some restrictions in place to fight to coronavirus outbreak.(AP Photo/Burhan Ozbilici)
People stand in a queue to buy liquor outside a wine store during a nationwide lockdown to curb the spread of new coronavirus in New Delhi, India, Wednesday, May 13, 2020. India’s lockdown, imposed March 25, is set to at least partially end May 18. Some restrictions on manufacturing, agriculture and self-employment were lifted May 4 to ease the burden on the poor and informal sector workers who comprise the majority of India’s workforce. (AP Photo/Altaf Qadri)
A child wears a protective face mask in a classroom at the Trinite public school in the Groix island, on May 12, 2020, two days after France eased lockdown measures to curb the spread of the COVID-19 pandemic, caused by the novel coronavirus. (Photo by Loic VENANCE / AFP) (Photo by LOIC VENANCE/AFP via Getty Images)
People wearing protective face masks sit on a motorcycle, as the outbreak of the coronavirus disease (COVID-19) continues, in Mexico City, Mexico May 11, 2020. REUTERS/Edgard Garrido
A teacher wearing a protective face mask speaks with pupils after they have returned to their classroom at the Trinite public school in the Groix island, on May 12, 2020, two days after France eased lockdown measures to curb the spread of the COVID-19 pandemic, caused by the novel coronavirus. (Photo by Loic VENANCE / AFP) (Photo by LOIC VENANCE/AFP via Getty Images)
A medic wearing protective gear looks out from a window of the Saint George hospital after a fire broke out in the medical facility in Saint Petersburg on May 12, 2020. - A fire at a hospital in Russia's second city Saint Petersburg on May 12 killed five coronavirus patients who had been attached to ventilators, officials and news agencies said. (Photo by Olga MALTSEVA / AFP) (Photo by OLGA MALTSEVA/AFP via Getty Images)
A man disinfects the Santa Maria in Trastevere Basilica, during the coronavirus disease (COVID-19) outbreak, in Rome, Italy, May 11, 2020. REUTERS/Remo Casilli TPX IMAGES OF THE DAY
People collect fish on the beach during the coronavirus disease (COVID-19) outbreak in Da Nang, Vietnam May 6, 2020. REUTERS/Kham TPX IMAGES OF THE DAY
A day laborer sleeps on his hand cart while waiting for customers during the holy fasting month of Ramadan in Kabul, Afghanistan, Monday, May 11, 2020. Muslims across the world are observing Ramadan, when they refrain from eating, drinking and smoking from dawn to dusk. (AP Photo/Rahmat Gul)
A young visitor, wearing face masks, waves at the Disneyland theme park in Shanghai as it reopened after the coronavirus closure, Monday, May 11, 2020. Visits will be limited initially and must be booked in advance, and the company said it will increase cleaning and require social distancing in lines for the various attractions.(AP Photo/Sam McNeil)
Grave diggers wearing protective suits bury a COVID-19 victim as relatives and friends stand at a safe distance, in the special purpose for coronavirus victims section of a cemetery in Kolpino, outside St.Petersburg, Russia, Sunday, May 10, 2020. (AP Photo/Dmitri Lovetsky)
Romanian care workers with face masks accompanied by police and security arrive at the train station of Vienna's Schwechat airport, Austria, Monday, May 11, 2020. This is the first train from Romania with care workers who had difficulty getting to Austria due to travel restrictions. The Austrian government has moved to restrict freedom of movement for people, in an effort to slow the onset of the COVID-19 coronavirus. (AP Photo/Ronald Zak)
The Portuguese word "Hunger" is projected over the Rio's Christ the Redeemer statue amid the new coronavirus outbreak in Rio de Janeiro, Brazil, Sunday, May 10, 2020. (AP Photo/Leo Correa)
A man waits for a takeout order in a fast food restaurant in Toronto, Saturday, May 9, 2020. (Chris Young/The Canadian Press via AP)
Anti-lockdown protesters hold placards on the steps of Victoria's state parliament in Melbourne on May 10, 2020 before police arrested 10 protesters - Hundreds of people gathered to protest the state's tough lockdown laws as well as 5G, vaccinations and coronavirus being a hoax. (Photo by William WEST / AFP) (Photo by WILLIAM WEST/AFP via Getty Images)
Anti-lockdown protesters chant on the steps of Victoria's state parliament in Melbourne on May 10, 2020 before police arrested 10 protesters - Hundreds of people gathered to protest the state's tough lockdown laws as well as 5G, vaccinations and coronavirus being a hoax. (Photo by William WEST / AFP) (Photo by WILLIAM WEST/AFP via Getty Images)
Relatives help a worker of SOS Funeral, wearing protection equipment, remove the body of Eldon Cascais, who according to the relatives had preexisting health conditions and died at his house after having trouble breathing, amid the new coronavirus outbreak in Manaus, Brazil, Saturday, May 9, 2020. (AP Photo/Felipe Dana)
Demonstrators calling for Gov. Gavin Newsom to end the stay-at-home orders gather at the Capitol in Sacramento, Calif., Saturday, May 9, 2020. (AP Photo/Rich Pedroncelli)
Soldiers wearing a face mask patrolling next to barbed wire at a newly locked down coronavirus affected area at old town of Petaling Jaya, Malaysia, on Sunday, May 10, 2020. Many business sectors reopened since May 4 in some parts of Malaysia since a partial virus lockdown began March 18. (AP Photo/Vincent Thian)
Maria Rita Dias dos Santos, 53, wipes away tears inside her home after receiving donated food from former inmates, part of a nonprofit organization known as “Eu sou Eu” or “I am me”, who are delivering food to people struggling due to the new coronavirus pandemic, at the Para-Pedro favela in Rio de Janeiro, Brazil, Friday, May 8, 2020. (AP Photo/Silvia Izquierdo)
Cemetery worker Bruno Avelino walks among graves as he waits for the arrival of a coffin that contains the remains of one-year-old Vitoria, in Rio de Janeiro, Brazil, Friday, May 8, 2020. According to her mother, Vitoria died from the new coronavirus, infected in the health unit where she was being hospitalized for a gastrointestinal problem. (AP Photo/Leo Correa)
A counter-protester beats on the hood of a car as he is pushed back after blocking a drive-by rally to reopen the country and economy outside City Hall in Philadelphia, Friday, May 8, 2020. (AP Photo/Matt Slocum)
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE

Even if they survive, the middle-aged can spend weeks in the hospital. In France, more than half of the first 300 people admitted to intensive care units were under 60.

"Young people are not invincible," WHO's Maria Van Kerkhove added, saying more information is needed about the disease in all age groups.

Italy reported that a quarter of its cases so far were among people ages 19 to 50. In Spain, a third are under age 44. In the US, the Centers for Disease Control and Prevention's first snapshot of cases found 29% were ages 20 to 44.

Then there's the puzzle of children, who have made up a small fraction of the world's case counts to date. But while most appear only mildly ill, in the journal Pediatrics researchers traced 2,100 infected children in China and noted one death, a 14-year-old, and that nearly 6% were seriously ill.

Another question is what role kids have in spreading the virus: "There is an urgent need for further investigation of the role children have in the chain of transmission," researchers at Canada's Dalhousie University wrote in The Lancet Infectious Diseases.

THE RISKIEST HEALTH CONDITIONS

Put aside age: Underlying health plays a big role. In China, 40% of people who required critical care had other chronic health problems. And there, deaths were highest among people who had heart disease, diabetes or chronic lung diseases before they got COVID-19.

Pre-existing health problems also can increase risk of infection, such as people who have weak immune systems including from cancer treatment.

Other countries now are seeing how pre-pandemic health plays a role, and more such threats are likely to be discovered. Italy reported that of the first nine people younger than 40 who died of Covid-19, seven were confirmed to have "grave pathologies" such as heart disease.

The more health problems, the worse they fare. Italy also reports about half of people who died with Covid-19 had three or more underlying conditions, while just 2% of deaths were in people with no pre-existing ailments.

Heart disease is a very broad term, but so far it looks like those most at risk have significant cardiovascular diseases such as congestive heart failure or severely stiffened and clogged arteries, said Dr. Trish Perl, infectious disease chief at UT Southwestern Medical Center.

Any sort of infection tends to make diabetes harder to control, but it's not clear why diabetics appear to be at particular risk with Covid-19.

Risks in the less healthy may have something to do with how they hold up if their immune systems overreact to the virus. Patients who die often seemed to have been improving after a week or so only to suddenly deteriorate — experiencing organ-damaging inflammation.

110 PHOTOS
Coronavirus in the United States
See Gallery
Coronavirus in the United States
Olga Karamalak puts the finishing touches on a Mother's Day flower arraignment at Relles Florist in Sacramento, Calif., Tuesday, May 5, 2020. Florists are among the retail businesses that Gov. Gavin Newsom said might be eligible to open before the end of this week under upcoming state guidelines on the coronavirus. (AP Photo/Rich Pedroncelli)
MTA officials work on trains for the disinfecting operations at the Coney Island Stillwell Avenue Terminal Wednesday, May 6, 2020, in the Brooklyn borough of New York. (AP Photo/Frank Franklin II)
Employees wait to hear President Donald Trump speak after a tour of a Honeywell International plant that manufactures personal protective equipment, Tuesday, May 5, 2020, in Phoenix. (AP Photo/Evan Vucci)
A shopper in a face mask looks over cuts of beef piled up in a cold room for purchase at a Costco warehouse store Tuesday, May 5, 2020, in west Denver. (AP Photo/David Zalubowski)
Bhagirathi Savage pays the cymbals at 7 o'clock, Tuesday evening, May 5, 2020 in the Queens borough of New York. She is part of a community of devotees of the late Indian guru Sri Chinmoy that gathers each evening to salute those on the frontlines of the coronavirus pandemic. (AP Photo/Mark Lennihan)
A fisherman casts into the surf Tuesday, May 5, 2020, in Huntington Beach, Calif. California Gov. Gavin Newsom's administration gave approval Tuesday to plans by Huntington Beach and two smaller cities to reopen beaches that fell under his order shutting down the entire Orange County coast after a heat wave drew large crowds to the shore. (AP Photo/Chris Carlson)
Emory Hospital RN Aisha Bennett takes a nasal swab at a pilot large scale drive-through COVID-19 testing site in the Georgia International Horse Park on Thursday, April 16, 2020, in Conyers, Ga. Testing is by appointment only and open to anyone in the general public who believes they are ill with COVID-19. According to Chad Wasdin, communications director for the Gwinnett Rockdale Newton Health Departments, due to increased testing capacity 400 appointments are scheduled for anyone who thinks they may be ill with the virus. While the Health Department requires a scheduled appointment to test individuals, referral from a doctor is not necessary. There is no charge for the testing, and those tested do not need to provide health insurance information. "We look forward to piloting this large-scale test site," said Dr. Audrey Arona, district health director and CEO of Gwinnett, Newton and Rockdale County Health Departments. "This is a fantastic collaboration between Rockdale and Newton county governments, their EMAs, and the Health Department. Testing will provide individuals in the community an opportunity to learn if their illness is consistent with the COVID-19 virus, and it will help us improve our plans for providing large-scale testing. (Curtis Compton/Atlanta Journal-Constitution via AP)
BROOKLYN, NEW YORK, UNITED STATES - 2020/04/21: People wearing face masks as a preventive measure, line up at one of NYC new testing tents outside Gotham Health in East New York amid the coronavirus outbreak. The Mayor of New York City, Bill de Blasio announced new testing facilities in low income communities where the coronavirus has hit the hardest. (Photo by Braulio Jatar/SOPA Images/LightRocket via Getty Images)
A woman looks to get information about job application in front of IDES (Illinois Department of Employment Security) WorkNet center in Arlington Heights, Ill., Thursday, April 9, 2020. Another 6.6 million people filed for unemployment benefits last week, according to the US Department of Labor, as American workers continue to suffer from devastating job losses, furloughs and reduced hours during the coronavirus pandemic. (AP Photo/Nam Y. Huh)
NEW YORK, UNITED STATES - 2020/04/21: Oculus mall and transportation hub stays virtually empty because of COVID-19 pandemic at World Trade Center. (Photo by Lev Radin/Pacific Press/LightRocket via Getty Images)
ALTAMONTE SPRINGS, UNITED STATES - APRIL 21, 2020: Health workers speak to a man with a bicycle after testing him for COVID-19 at a mobile testing site at the Apostolic Church of Christ in a historic black neighborhood in Seminole County. State and county health officials are offering free tests at six historic black neighbourhoods to help residents who are unable to drive to a health clinic or may be unable to afford health insurance.- PHOTOGRAPH BY Paul Hennessy / Echoes Wire/ Barcroft Studios / Future Publishing (Photo credit should read Paul Hennessy / Echoes Wire/Barcroft Media via Getty Images)
Volunteers at the Islamic Society of Central Florida distribute food from the Second Harvest Food Bank of Central Florida to needy families during a drive-thru event on April 9, 2020 in Orlando, Florida. The food bank has seen record demand for assistance in the Orlando area due to job losses caused by the coronavirus pandemic. (Photo by Paul Hennessy/NurPhoto via Getty Images)
USS Intrepid is seen with blue lights on April 9, 2020 in New York City, USA., Landmarks across the United States are Illuminated In Blue To Honor Essential Workers with the hashtag "Light it Blue" (Photo by John Nacion/NurPhoto via Getty Images)
NEW ORLEANS, LA - APRIL 09: Some residents are attempting to bring some Coronavirus (COVID-19) pandemic by dressing as the Easter Bunny and walking the Lakeview neighborhood in preparation for Easter on April 09, 2020, in New Orleans, LA. (Photo by Stephen Lew/Icon Sportswire via Getty Images)
NEW YORK, NY - APRIL 09: A Building in Times Square, displaying a thank you message to those fighting for our lives, is reflected in a puddle amid the coronavirus pandemic on April 9, 2020 in New York City. COVID-19 has spread to most countries around the world, claiming 96,000 lives with infections at 1.6 million people. (Photo by John Lamparski/Getty Images)
WASHINGTON, DC APRIL 09: Geoff Gilbert (left), Madhvi Venkatraman(CQ)(center), and Megan Macaraeg, help undocumented immigrants who are in need of help during the pandemic covid19 in Columbia Heights in Washington, DC on April 09, 2020. (Photo by Marvin Joseph/The Washington Post via Getty Images)
NEW YORK, USA - APRIL 7: Empire State Building lights up like an ambulance to honor emergency healthcare workers responding to the new type of coronavirus (COVID-19) pandemic in New York City, United States on April 7, 2020. (Photo by Tayfun Coskun/Anadolu Agency via Getty Images)
NEW YORK, NY - APRIL 7: Three medical workers wearing gloves and face masks stand at the entrance to the Maimonides Medical Center in the on April 7, 2020 in the Borough Park neighborhood of the Brooklyn borough of New York City. New York City has more than 74,000 confirmed cases of COVID-19, including more than 3,500 deaths, according to published reports. (Photo by Pablo Monsalve/VIEWpress via Getty Images)"n
NEW YORK, New York - APRIL 07: A view of the "Police Line- Do Not Cross" tape marking the parameter of a temporary field hospital to treat covid-19 patients set up in Central Park by "Samaritans purse" a charitable organization working with Mount Sinai. on April 07, 2020 in New York City, United States. COVID-19 has spread to most countries around the world, claiming over 80,000 lives with over 1.4 million infections. (Photo by Roy Rochlin/Getty Images)
NEW YORK, UNITED STATES - APRIL 7, 2020: Hospital workers wheel out bodies to be stored in a portable morgue outside Brooklyn Hospital. New York had its highest 24 hour death toll with 731 people dying of the corona virus, however hospitalization seems to be going down.- PHOTOGRAPH BY Braulio Jatar / Echoes WIre/ Barcroft Studios / Future Publishing (Photo credit should read Braulio Jatar / Echoes Wire/Barcroft Media via Getty Images)
WEST COVINA, CA - APRIL 07: Karina Pantoja, left, community home dental coordinator along with Dentist Dr. Rosette El Rehab screens people during Coronavirus testing by the city of West Covina and AltaMed in West Covina on Tuesday, April 07, 2020. (Photo by Keith Birmingham/MediaNews Group/Pasadena Star-News via Getty Images)
BOSTON, MA - APRIL 8: Boston Mayor Marty Walsh speaks at a press briefing on the city's efforts battling the coronavirus pandemic outside City Hall in Boston on Apr. 7, 2020. He wore a New England Patriots protective face mask. (Photo by Matthew J. Lee/The Boston Globe via Getty Images)
WASHINGTON, DC - APRIL 07: A "Station Closed" sign is hung at the gate of Federal Triangle Metro Station April 7, 2020 in Washington, DC. Washington Metropolitan Area Transit Authority announced that it is cutting late night service and closing all Metro stations at 9pm daily until further notice due to lower ridership in the COVID-19 outbreak. Nineteen Metro stations had already been closed prior to the service cut. (Photo by Alex Wong/Getty Images)
Residents of the Sunrise at FlatIrons assisted living facility participated in a "social distancing" workout from their balconies or in the common area on Tuesday, April 07, 2020, in Broomfield, Colo. Senior living facilities across the state are currently quarantining residents as a precaution to the current coronavirus pandemic. (Photo by Jeremy Papasso/MediaNews Group/Boulder Daily Camera via Getty Images)
NEW JERSEY, USA - APRIL 7: A general view of empty city from Eagle Rock Reservation Park during the new type of coronavirus (COVID-19) pandemic in New Jersey, United States on April 7, 2020. (Photo by Islam Dogru/Anadolu Agency via Getty Images)
NEW YORK, New York - APRIL 07: A Skater on roller blades wears a surgical mask on the West Side Highway Bike Path in front of the USNS Comfort which is docked on pier 90, in Manhattan on April 07, 2020 in New York City, United States. COVID-19 has spread to most countries around the world, claiming over 80,000 lives with over 1.4 million infections. (Photo by Roy Rochlin/Getty Images)
Reading, PA - March 26: A Stay Strong sign has been erected in the cloverleaf at the Penn Street exit of Route 422, in Reading, PA Thursday, March 26, 2020, to offer encouragement in the coronavirus epidemic.(Photo by Bill Uhrich/MediaNews Group/Reading Eagle via Getty Images)
UNITED STATES - MARCH 27: Rep. Tom Malinowski, D-N.J., walks down the House steps as the House votes on the Coronavirus Aid, Relief, and Economic Security Act in Washington on Friday, March 27, 2020. (Photo by Caroline Brehman/CQ-Roll Call, Inc via Getty Images)
NEW YORK, USA - MARCH 25: A patient with a face mask is seen at the Maimonides Medical Center in Brooklyn, New York, United States on March 25, 2020. The coronavirus-related deaths in the U.S. topped 800 on Wednesday, while the number of cases reached over 55,200, according to latest figures by Johns Hopkins University. (Photo by Tayfun Coskun/Anadolu Agency via Getty Images)
NEW YORK, NY - MARCH 27: A New York Police officer wears a face mask as he directs traffic on a local street on March 27, 2020 in New York City. At least 350 members of the New York City Police Department including deputy commissioner John Miller were confirmed to have the virus. (Photo by Eduardo Munoz Alvarez/Getty Images)
NEW YORK, NY - MARCH 27: A New York Police officer wears a face mask as he directs traffic on a local street on March 27, 2020 in New York City. At least 350 members of the New York City Police Department including deputy commissioner John Miller were confirmed to have the virus. (Photo by Eduardo Munoz Alvarez/Getty Images)
WASHINGTON, DC - MARCH 27: U.S. Speaker of the House Nancy Pelosi (D-CA) talks with reporters as she arrives at the U.S. Capitol on March 27, 2020 in Washington, DC. The House of Representatives is scheduled to vote today on the stimulus bill intended to combat the economic effects caused by the coronavirus pandemic. (Photo by Win McNamee/Getty Images)
NEW YORK, NY - MARCH 27: People cross Park Av. after it was announced that some streets will be shut as lockdown continues in response to the coronavirus (COVID-19) outbreakon March 27, 2020 in New York City. Mayor Bill de Blasio chose four streets across four boroughs to test whether shutting down streets to vehicular traffic would increase social distancing among pedestrians during the COVID-19 pandemic shutdown. (Photo by Eduardo Munoz Alvarez/Getty Images)
FLORIDA, USA - MARCH 20: Paramedics dressed in hazmat suits assist the evacuation of cruiseships crew members with respiratory symptoms associated with coronavirus (COVID-19) at the Coast Guardâs Miami Beach station, in Miami, Florida, United States on March 26, 2020. (Photo by MARCO BELLO/Anadolu Agency via Getty Images)
FLORIDA, USA - MARCH 20: An ambulance is seen during the evacuation of cruiseships crew members with respiratory symptoms associated with coronavirus (COVID-19) at the Coast Guardâs Miami Beach station, in Miami, Florida, United States on March 26, 2020. (Photo by MARCO BELLO/Anadolu Agency via Getty Images)
Reading, PA - March 26: (L-R) Siblings Azuleirys Francisco, 10, Alexander Francisco, 6, and Jovani Francisco, 8, sanitize their hands as a precaution against coronavirus while picking up meals from the parking lot at 4th and Windsor in Reading, PA Thursday afternoon Thursday March 26, 2020. The site is run by Olivets and the Reading School District.(Photo by Lauren A. Little/MediaNews Group/Reading Eagle via Getty Images)
Amity twp., PA - March 26: The sign for Hope Church in Amity Township that reads "Social Distancing, Join us online..." Thursday afternoon March 26, 2020.(Photo by Ben Hasty/MediaNews Group/Reading Eagle via Getty Images)
A woman poses for a photo with her dog in a mostly empty Times Square, New York, US, on March 25, 2020. (Photo by John Lamparski/NurPhoto via Getty Images)
NEW YORK, USA - MARCH 25: A view of empty road in Brooklyn, New York, United States on March 25, 2020. The coronavirus-related deaths in the U.S. topped 800 on Wednesday, while the number of cases reached over 55,200, according to latest figures by Johns Hopkins University. (Photo by Tayfun Coskun/Anadolu Agency via Getty Images)
A sign is displayed at a coffee shop on March 25, 2020 in New York City. - The number of confirmed cases of the new coronavirus in the United States reached 60,115 on Wednesday while 827 people had died, a tracker run by Johns Hopkins University showed. (Photo by Angela Weiss / AFP) (Photo by ANGELA WEISS/AFP via Getty Images)
NEW YORK, NY - MARCH 25: Basketball courts are seen empty due to coronavirus spread on March 25, 2020 in New York City, New York. Across the country schools, businesses and places of work have either been shut down or are restricting hours of operation as health officials try to slow the spread of COVID-19. (Photo by Eduardo Munoz Alvarez/Getty Images)
SAN FRANCISCO, CA, USA - MARCH 18: Shoppers at Walgreens in San Franciscoâs Castro District make last minute purchases minutes before the shelter in place directive was to take effect on March 18, 2020. (Photo by Neal Waters/Anadolu Agency via Getty Images)
SAN JOSE, CA, USA - MARCH 18: A Safeway store in San Jose posts new shorter store hours to provide a safer work environment ahead of Tuesdayâs directive to shelter in place for residents of the six counties that make up the Bay Area, on March 18, 2020. (Photo by Neal Waters/Anadolu Agency via Getty Images)
SAN FRANCISCO, CA, USA - MARCH 18: Mounted officers patrol the area outside Pier 39 in San Francisco on day one of the shelter in place order on March 18, 2020. (Photo by Neal Waters/Anadolu Agency via Getty Images)
MANASSAS, USA - MARCH 17: Weapons on display at a gun shop in Manassas, Virginia, United States as gun and ammunition sales in the U.S. have skyrocketed as the coronavirus (COVID-19) pandemic spread across the country. (Photo by Yasin Ozturk/Anadolu Agency via Getty Images)
A security officer stands guard at a tent set up outside the emergency room at an AdventHealth hospital on March 17, 2020 in Orlando, Florida. The tent is part of AdventHealth's surge planning in case extra space is needed to care for potential coronavirus cases in the community. (Photo by Paul Hennessy/NurPhoto via Getty Images)
A tent is seen set up outside the emergency room at an AdventHealth hospital on March 17, 2020 in Orlando, Florida. The tent is part of AdventHealth's surge planning in case extra space is needed to care for potential coronavirus cases in the community. (Photo by Paul Hennessy/NurPhoto via Getty Images)
External and outside of emergency room views of the pandemic, novel Coronavirus, or COVID-19 are seen at Advocate Lutheran General Hospital on March 17, 2020 in Park Ridge, Illinois, United States. The collection includes additional tents, a warning construction sign, an empty road, a congested road, a law enforcement vehicle, and a drive through testing area. (Photo by Patrick Gorski/NurPhoto via Getty Images)
NEWTON, MA - MARCH 17: Medical professionals work in coronavirus testing tents at Newton Wellesley Hospital in Newton, MA on March 17, 2020. (Photo by Suzanne Kreiter/The Boston Globe via Getty Images)
BOSTON, MA - MARCH 17: An emergency tent is set up at the Carney Hospital in Boston's Dorchester for coronavirus pandemic use on March 17, 2020. (Photo by David L. Ryan/The Boston Globe via Getty Images)
LEONARDTOWN, MARYLAND - MARCH 17: Nurses screen patients for COVID-19 virus testing at a drive-up location outside Medstar St. Mary's Hospital on March 17, 2020 in Leonardtown, Maryland. The facility is one of the first in the Washington, DC area to offer coronavirus testing as more than 5,200 cases have been confirmed in the United States, and more than 90 deaths have been attributed to the virus. (Photo by Win McNamee/Getty Images)
A sign on a table provides instructions for social distancing, while a group of people are seen in the background, selective focus, sitting around a small table, at a hospital in San Francisco during an outbreak of the COVID-19 coronavirus, California, March 16, 2020. (Photo by Smith Collection/Gado/Getty Images)
NEWTON, MA - MARCH, 16: Nurse practitioner Amy Israelian puts on protective gear in a tent in the parking lot of the Newton-Wellesley Hospital before testing a possible coronavirus patient in Newton, MA on March 16, 2020. (Photo by Adam Glanzman/For The Washington Post via Getty Images)
Two staff members wheel Amwell telemedicine carts into the entrance of the University of California San Francisco (UCSF) Benioff Children's Hospital in Mission Bay, San Francisco, California during an outbreak of the COVID-19 coronavirus, March 16, 2020. As a result of the outbreak, patients are increasingly being asked to conduct telemedicine appointments to avoid infecting healthcare workers. (Photo by Smith Collection/Gado/Getty Images)
People line up to enter a triage tent outside of the emergency room at Memorial West Hospital in Pembroke Pines, Fla., on Monday, March 16, 2020. (Matias J. Ocner/Miami Herald/Tribune News Service via Getty Images)
WESTMINSTER, MARYLAND - MARCH 16: Dawn Canova, clinical manager for outpatient wound care at Carroll Hospital, takes off her protective gloves after taking a sample to test a person for the coronavirus at a drive-thru station in the hospital's parking garage March 16, 2020 in Westminster, Maryland. Not open to the general public for testing, the station was set up to take samples from people who had spoken with their doctors and received explicit direction to get a test for the novel coronavirus called COVID-19. (Photo by Chip Somodevilla/Getty Images)
WESTMINSTER, MARYLAND - MARCH 16: Carroll Hospital Critical Care Unit Clinical Manager Stephanie Bakert talks to a person through his car window using a mobile phone before testing him for the coronavirus at a drive-thru station in the hospital's parking garage March 16, 2020 in Westminster, Maryland. Not open to the general public for testing, the station was set up to take samples from people who had spoken with their doctors and received explicit direction to get a test for the novel coronavirus called COVID-19. (Photo by Chip Somodevilla/Getty Images)
NEW YORK, NY - MARCH 15: An exterior view of Lenox Hill Hospital as the coronavirus continues to spread across the United States on March 15, 2020 in New York City. The World Health Organization declared coronavirus (COVID-19) a global pandemic on March 11th. (Photo by Cindy Ord/Getty Images)
NEW YORK, NY - MARCH 15: Passengers disembark from the Norwegian Bliss cruise ship on March 15, 2020 in New York City. Mayor Bill de Blasio said on Tuesday that any cruise ship passenger disembarking in New York City with a temperature over 100.4 will be given the choice of self-isolating at home or be taken to a hospital to protect against the spread of COVID-19. (Photo by Stephanie Keith/Getty Images)
DAYTON, WA - MARCH 14: Dr. Lewis Neace, head of the ER at Dayton General Hospital poses for a photograph. Dayton, a small town in rural southeast Washington has an aging population, had its first positive test for Coronavirus and is waiting on results of more tests. (Photo by Nick Otto for the Washington Post)
NEW YORK, NEW YORK - MARCH 14: An exterior view of Harlem Hospital Center, aka NYC Health + Hospitals/Harlem, as the coronavirus continues to spread across the United States on March 14, 2020 in New York City. The World Health Organization declared coronavirus (COVID-19) a global pandemic on March 11th. (Photo by Dia Dipasupil/Getty Images)
JACKSONVILLE, FL - MARCH 14: A general view of the Ascension St. Vincent's Riverside Hospital on March 14, 2020 in Jacksonville, Florida. The World Health Organization (WHO) declared Coronavirus (COVID-19) a pandemic. (Photo by Cliff Hawkins/Getty Images)
Un puñado de personas transitan la terminal de Grand Central en Nueva York el 23 de marzo del 2020. Normalmente hay multitudes en la estación, pero muy poca gente está viajando como consecuencia del coronavirus. (AP Photo/Mark Lennihan)
A sign displaying messages on how to reduce the spread of COVID-19, the disease caused by the new coronavirus, is displayed at the mouth of the Manhattan Bridge, Monday, March 23, 2020, in the Brooklyn borough of New York. (AP Photo/John Minchillo)
NEW PALTZ, NY - MARCH 22: A highway information display says, "STOP THE SPREAD SAVE LIVES" on a mostly empty Interstate 87 on Sunday afternoon. The highway was mostly empty on the same day that New York State Governor Andrew Cuomo pleads with New York residents to take the stay-at-home orders seriously regarding the Coronavirus pandemic. Photographed in New Paltz, New York on March 22, 2020, USA. (Photo by Ira L. Black/Corbis via Getty Images)
People are seen lining up for testing Covid-19 in Elmhurst Queens to test for Coronavirus, on March 21, 2020. (Photo by John Nacion/NurPhoto via Getty Images)
People are seen lining up for testing Covid-19 in Elmhurst Queens to test for Coronavirus, on March 21, 2020. (Photo by John Nacion/NurPhoto via Getty Images)
STONY BROOK, NEW YORK - MARCH 21: A sign direct people to a COVID-19 test facility at Stony Brook University on March 21, 2020 in Stony Brook, New York. The World Health Organization declared coronavirus (COVID-19) a global pandemic on March 11th. (Photo by Bruce Bennett/Getty Images)
US President Donald Trump and other members of the task force listen as National Institute of Allergy and Infectious Diseases Director, Dr. Anthony Fauci, speaks during the daily briefing on the novel coronavirus, COVID-19, at the White House on March 21, 2020, in Washington, DC. (Photo by JIM WATSON / AFP) (Photo by JIM WATSON/AFP via Getty Images)
Women wear face masks a a scarf to protect their mouths and nose as they walk along 34th St., Friday, March 20, 2020, in New York. New York Gov. Andrew Cuomo is ordering all workers in non-essential businesses to stay home and banning gatherings statewide. "Only essential businesses can have workers commuting to the job or on the job," Cuomo said of an executive order he will sign Friday. Nonessential gatherings of individuals of any size or for any reason are canceled or postponed. (AP Photo/Mary Altaffer)
A subway customer wears protective gloves on an empty car as it stops at a sparsely populated 57th Street station due to COVID-19 concerns, Friday, March 20, 2020, in New York. Gov. Andrew Cuomo is ordering all workers in non-essential businesses to stay home and banning gatherings statewide. "Only essential businesses can have workers commuting to the job or on the job," Cuomo said of an executive order on Friday. Nonessential gatherings of individuals of any size or for any reason are canceled or postponed. (AP Photo/John Minchillo)
A postal worker wears a protective mask and gloves while operating a route in the Queens borough of New York, Friday, March 20, 2020. Gov. Andrew Cuomo is ordering all workers in non-essential businesses to stay home and banning gatherings statewide. "Only essential businesses can have workers commuting to the job or on the job," Cuomo said of an executive order he will sign Friday. Nonessential gatherings of individuals of any size or for any reason are canceled or postponed. (AP Photo/John Minchillo)
A Red Robin reastaurant in Tigard, Ore., has closed some tables in order to maintain 'social distancing' between diners per CDC guidelines Sunday, March 15, 2020. They said they were running the place at 50 percent capacity so they could leave tables empty between customers. (AP Photo/Gillian Flaccus)
A commuter pauses to read a video display on the Gallery Place Metro subway train platform in Washington, Friday, March 13, 2020, with a message from the Centers for Disease Control and Prevention (CDC) on the proper way to wash your hands to combat the coronavirus outbreak. (AP Photo/Carolyn Kaster)
US Vice President Mike Pence, flanked by CDC Director Robert R. Redfield (L) and FEMA Administrator Peter Gaynor, shows documents to reporters during the daily briefing on the novel coronavirus, COVID-19, at the White House on March 22, 2020, in Washington, DC. (Photo by Eric BARADAT / AFP) (Photo by ERIC BARADAT/AFP via Getty Images)
An electronic billboard sponsored by the Centers for Disease Control and Prevention (CDC) provides tips for the public on ways to prevent the spread of coronavirus (COVID-19) on March 20, 2020 along Interstate 4 in Deland, Florida. (Photo by Paul Hennessy/NurPhoto via Getty Images)
Street performer Eddie Webb looks around the nearly deserted French Quarter looking to make money in New Orleans, Sunday, March 22, 2020. With much of the city already hunkered down due to the coronavirus pandemic, Louisiana Gov. John Bel Edwards issues a shelter-in-place order to take effect starting Monday at 5:00 PM. (AP Photo/Gerald Herbert)
A sign to draw customers is seen outside the nearly empty Superior Seafood and Oyster Bar in New Orleans, Thursday, March 19, 2020. Louisiana Governor John Bel Edwards and New Orleans Mayor LaToya Cantrell have ordered all restaurants and bars to close except for takeout, and asked residents to remain home and maintain social distancing from others when outside, due to the COVID-19 virus pandemic. (AP Photo/Gerald Herbert)
Kamari Fletcher waits for her to-go order inside the nearly empty Superior Seafood and Oyster Bar in New Orleans, Thursday, March 19, 2020. Louisiana Gov. John Bel Edwards and New Orleans Mayor Latoya Cantrell have ordered all restaurants and bars to close except for takeout, and asked residents to remain home and maintain social distancing from others when outside, due to the coronavirus pandemic. (AP Photo/Gerald Herbert)
A shuttered business is seen in the French Quarter in New Orleans on March 26, 2020, during the coronavirus outbreak. - New Orleans, the Louisiana city known as the "Big Easy" famed for its jazz and nightlife, has become an epicenter of the coronavirus pandemic gripping the United States. The southern US state now has 2,305 confirmed cases and 83 deaths. New Orleans alone accounts for 997 of the cases and 46 of the deaths. (Photo by Emily Kask / 30203169A / AFP) (Photo by EMILY KASK/30203169A/AFP via Getty Images)
Words from Gloria Gaynor's "I Will Survive" are painted onto plywood covering the window of a closed business during the coronavirus outbreak in New Orleans on March 26, 2020. - New Orleans, the Louisiana city known as the "Big Easy" famed for its jazz and nightlife, has become an epicenter of the coronavirus pandemic gripping the United States. The southern US state now has 2,305 confirmed cases and 83 deaths. New Orleans alone accounts for 997 of the cases and 46 of the deaths. (Photo by Emily Kask / 30203169A / AFP) (Photo by EMILY KASK/30203169A/AFP via Getty Images)
A closure note is posted on the family-owned Bar Redux in the Bywater in New Orleans on March 26, 2020. - New Orleans, the Louisiana city known as the "Big Easy" famed for its jazz and nightlife, has become an epicenter of the coronavirus pandemic gripping the United States. The southern US state now has 2,305 confirmed cases and 83 deaths. New Orleans alone accounts for 997 of the cases and 46 of the deaths. (Photo by Emily Kask / 30203169A / AFP) (Photo by EMILY KASK/30203169A/AFP via Getty Images)
A shuttered business is pictured on Decatur Street in New Orleans, Louisiana, on March 26, 2020. - New Orleans, the Louisiana city known as the "Big Easy" famed for its jazz and nightlife, has become an epicenter of the coronavirus pandemic gripping the United States. The southern US state now has 2,305 confirmed cases and 83 deaths. New Orleans alone accounts for 997 of the cases and 46 of the deaths. (Photo by Emily Kask / 30203169A / AFP) (Photo by EMILY KASK/30203169A/AFP via Getty Images)
A shuttered restaurant is pictured in the French Quarter in New Orleans, Louisiana, on March 26, 2020. - New Orleans, the Louisiana city known as the "Big Easy" famed for its jazz and nightlife, has become an epicenter of the coronavirus pandemic gripping the United States. The southern US state now has 2,305 confirmed cases and 83 deaths. New Orleans alone accounts for 997 of the cases and 46 of the deaths. (Photo by Emily Kask / 30203169A / AFP) (Photo by EMILY KASK/30203169A/AFP via Getty Images)
National Guard members walk down Rampart Street in New Orleans, Louisiana, on March 26, 2020. - New Orleans, the Louisiana city known as the "Big Easy" famed for its jazz and nightlife, has become an epicenter of the coronavirus pandemic gripping the United States. The southern US state now has 2,305 confirmed cases and 83 deaths. New Orleans alone accounts for 997 of the cases and 46 of the deaths. (Photo by Emily Kask / 30203169A / AFP) (Photo by EMILY KASK/30203169A/AFP via Getty Images)
Stony Brook, N.Y.: State workers and members of the National Guard check in people arriving for the drive-thru coronavirus testing at Stony brook University in New York on March 25, 2020. (Photo by John Paraskevas/Newsday RM via Getty Images)
Gov. Brad Little issues a statewide stay-at-home order to further prevent spread of coronavirus COVID-19 at a press conference Wednesday, March 25, 2020 held at Gowen Field, headquarters of the Idaho Army National Guard in Boise, Idaho. (Darin Oswald/Idaho Statesman/Tribune News Service via Getty Images)
A Healthcare worker help to check in with the assistant from the Florida Army National Guard as vehicles line up at the COVID-19 drive-thru testing center at Marlins Park as the coronavirus pandemic continues on Wednesday, March 25, 2020 in Miami. (David Santiago/Miami Herald/Tribune News Service via Getty Images)
A Healthcare worker help to check in with the assistant from the Florida Army National Guard as vehicles line up at the COVID-19 drive-thru testing center at Marlins Park as the coronavirus pandemic continues on Wednesday, March 25, 2020 in Miami. (David Santiago/Miami Herald/Tribune News Service via Getty Images)
WASHINGTON, DC - MARCH 26: (L-R) U.S. President Donald Trump and National Institute of Allergy and Infectious Diseases Director Anthony Fauci arrive for a briefing on the coronavirus pandemic in the press briefing room of the White House on March 26, 2020 in Washington, DC. The U.S. House of Representatives is scheduled to vote Friday on the $2 trillion stimulus package to combat the effects of the COVID-19 pandemic. (Photo by Drew Angerer/Getty Images)
WASHINGTON, DC - MARCH 26: National Institute of Allergy and Infectious Diseases Director Anthony Fauci listens as U.S. President Donald Trump speaks during a briefing on the coronavirus pandemic, in the press briefing room of the White House on March 26, 2020 in Washington, DC. After the U.S. House of Representatives votes on Friday, President Trump is expected to sign the $2 trillion stimulus package to combat the effects of the COVID-19 pandemic. (Photo by Drew Angerer/Getty Images)
WASHINGTON, DC - MARCH 25: Flanked by National Institute of Allergy and Infectious Diseases Director Anthony Fauci (L) and White House coronavirus response coordinator Deborah Birx, Vice President Mike Pence speaks during a briefing on the coronavirus pandemic, in the press briefing room of the White House on March 25, 2020 in Washington, DC. The United States Senate continues to work on a $2 trillion aide package to combat the health and economic effects of the COVID-19 pandemic. (Photo by Drew Angerer/Getty Images)
BLOOMINGTON, UNITED STATES - MARCH 26, 2020: A volunteer puts on gloves before participating in the Monroe County Food Train to give meals, and groceries to youth 18 and under, during the COVID-19/Coronavirus emergency in Bloomington. Hundreds of workers have been laid off in the community, and the governor has issued a stay-at-home order.- PHOTOGRAPH BY Jeremy Hogan / Echoes Wire/ Barcroft Studios / Future Publishing (Photo credit should read Jeremy Hogan / Echoes Wire/Barcroft Media via Getty Images)
BOSTON, MA - MARCH 26: Secretary of Health and Human Services Marylou Sudders and Gov. Charlie Baker hold a press conference in the Gardner Auditorium at The Massachusetts State House in Boston on March 26, 2020. Baker and Sudders addressed attempting to secure more pieces of personal protection equipment and mobile schooling concerns. (Photo by Blake Nissen/The Boston Globe via Getty Images)
The Magic Bag theater is pictured closed, due to Michigan Governor Gretchen Whitmer's measures to stop the spread of COVID 19 in Ferndale, Michigan on March 26, 2020. (Photo by JEFF KOWALSKY / AFP) (Photo by JEFF KOWALSKY/AFP via Getty Images)
A Great Clips hair salon sign is pictured as it's closed, due to Michigan Governor Gretchen Whitmer's measures to stop the spread of COVID 19 in Ferndale, Michigan on March 26, 2020. (Photo by JEFF KOWALSKY / AFP) (Photo by JEFF KOWALSKY/AFP via Getty Images)
A closed sign is seen on the Suburban Buick GMC that is currently closed by Michigan Governor Gretchen Whitmer to stop the spread of coronavirus,COVID-19, in Ferndale, Michigan on March 26, 2020. - President Donald Trump, keen for an early lifting of economically costly social distancing measures against the coronavirus, said he would propose dividing the United States by risk levels. In a letter to state governors released by the White House, Trump said that better testing now allows the mapping of virus threat on a local level. (Photo by JEFF KOWALSKY / AFP) (Photo by JEFF KOWALSKY/AFP via Getty Images)
BOSTON, MA - MARCH 26: The Boston Public Garden on March 26, 2020 in Boston, United States. Massachusetts Governor Charlie Baker required all non-essential businesses to close on Tuesday and requested the population to stay home as much as possible. (Photo by Scott Eisen/Getty Images)
METHUEN, MA - MARCH 25: A sign in front of the Donald P. Timony Grammar School in Methuen, MA reminds students and parents to check their email often for updates on March 25, 2020. Massachusetts Governor Charlie Baker announced that schools in the state will remained closed until at least May 4 in response to the coronavirus emergency. The announcement came as state public health officials reported that the total number of coronavirus-related deaths had risen to 15, up from 11 the day before. Officials reported 679 new confirmed cases of the disease, bringing the tally in Massachusetts to 1,838, up from 1,159. Officials said 19,794 people had been tested as of Wednesday, up from 13,749. (Photo by Jim Davis/The Boston Globe via Getty Images)
A Los Angeles traffic officer wear a mask as he directs traffic on March 24, 2020. - In California, already under orders to stay home because of the coronavirus outbreak, Governor Gavin Newsom tightened the lockdown to shut parking lots at beaches and parks after tens of thousands flouted social distancing rules. (Photo by Frederic J. BROWN / AFP) (Photo by FREDERIC J. BROWN/AFP via Getty Images)
SAN JOSE, CALIFORNIA - MARCH 24: Members of the California National Guard 115th Regional Support Group help pack boxes of food at the Second Harvest Food Bank of Silicon Valley on March 24, 2020 in San Jose, California. California Gov. Gavin Newsom has deployed the California National Guard to help distribute food at food banks across the state that have seen a huge decline in volunteers that usually help sort and pack food for the needy. (Photo by Justin Sullivan/Getty Images)
A woman walks through an almost-deserted Times Square in the early morning hours on April 23, 2020 in New York City. - Job losses from the coronavirus pandemic deepened last week with data Thursday showing another 4.4 million US workers filed new claims for jobless benefits, bringing the total to 26.4 million since mid-March. (Photo by Johannes EISELE / AFP) (Photo by JOHANNES EISELE/AFP via Getty Images)
A woman crosses a quiet intersection Wednesday night, April 22, 2020, in the Bronx borough of New York during the coronavirus outbreak. As President Donald Trump aims for a swift nationwide reopening, he faces a new challenge: convincing people it's safe to come out and resume their normal lives. (AP Photo/Mark Lennihan)
Members of the NYPD attend the funeral of Traffic Section Commander Mohammed Chowdhury in New York, Wednesday, April 22, 2020. Chowdhury died on Sunday, April 19, 2020, from complications related to the new coronavirus. (AP Photo/Seth Wenig)
Members of the NYPD Honor Guard, wearing masks, carry the casket of Traffic Section Commander Mohammed Chowdhury during his funeral in New York, Wednesday, April 22, 2020. Chowdhury died on Sunday, April 19, 2020, from complications related to the new coronavirus. (AP Photo/Seth Wenig)
Mourners wearing personal protective equipment watch as the casket of Traffic Section Commander Mohammed Chowdhury is loaded into a hearse during his funeral in New York, Wednesday, April 22, 2020. Chowdhury died on Sunday, April 19, 2020, from complications related to the new coronavirus. (AP Photo/Seth Wenig)
Photo by: John Nacion/STAR MAX/IPx 2020 4/22/20 Life in New York City during the covid-19 pandemic.
Photo by: John Nacion/STAR MAX/IPx 2020 4/22/20 Life in New York City during the covid-19 pandemic.
Protesters stand on the steps of the Michigan State Capitol in Lansing, Mich., Wednesday, April 15, 2020. Flag-waving, honking protesters drove past the Michigan Capitol on Wednesday to show their displeasure with Gov. Gretchen Whitmer's orders to keep people at home and businesses locked during the new coronavirus COVID-19 outbreak. (AP Photo/Paul Sancya)
A passenger in a vehicle holds a sign during a protest at the State Capitol in Lansing, Mich., Wednesday, April 15, 2020. Flag-waving, honking protesters drove past the Michigan Capitol on Wednesday to show their displeasure with Gov. Gretchen Whitmer's orders to keep people at home and businesses locked during the new coronavirus COVID-19 outbreak. (AP Photo/Paul Sancya)
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE

As for pre-existing lung problems, "this is really happening in people who have less lung capacity," Perl said, because of diseases such as COPD -- chronic obstructive pulmonary disease -- or cystic fibrosis.

Asthma also is on the worry list. No one really knows about the risk from very mild asthma, although even routine respiratory infections often leave patients using their inhalers more often and they'll need monitoring with Covid-19, she said. What about a prior bout of pneumonia? Unless it was severe enough to put you on a ventilator, that alone shouldn't have caused any significant lingering damage, she said.

THE GENDER MYSTERY

Perhaps the gender imbalance shouldn't be a surprise: During previous outbreaks of SARS and MERS -- cousins to Covid-19 -- scientists noticed men seemed more susceptible than women.

This time around, slightly more than half the Covid-19 deaths in China were among men. Other parts of Asia saw similar numbers. Then Europe, too, spotted what Dr. Deborah Birx, the White House coronavirus coordinator, labeled a concerning trend.

In Italy, where men so far make up 58% of infections, male deaths are outpacing female deaths and the increased risk starts at age 50, according to a report from Italy's Covid-19 surveillance group.

The US CDC hasn't yet released details. But one report about the first nearly 200 British patients admitted to critical care found about two-thirds were male.

One suspect: Globally, men are more likely to have smoked more heavily and for longer periods than women. The European Center for Disease Prevention and Control is urging research into smoking's connection to Covid-19.

Hormones may play a role, too. In 2017, University of Iowa researchers infected mice with SARS and, just like had happened in people, males were more likely to die. Estrogen seemed protective — when their ovaries were removed, deaths among female mice jumped, the team reported in the Journal of Immunology.

Read Full Story

FROM OUR PARTNERS