Home-made face masks need layers to be effective

Homemade face masks likely need at least two layers to curb Covid-19 spread, according to a new study published in the British Medical Journal.

It found preferably three layers of cloth were needed to reduce dispersal of viral droplets from the nose and mouth.

A team of Australian researchers compared the effectiveness of single and double-layer cloth face coverings, with a 3-plysurgical face mask at reducing droplet spread.

They found the surgical face mask was the most effective, followed by a double-layer covering. They also noted that other factors contributed to the effectiveness of cloth face masks, such as the material, fit and washing.

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