Homemade cotton masks can prevent 99.9% of coronavirus droplets from spraying into the air
Homemade cotton masks can prevent 99.9% of coronavirus droplets from spraying into the air when someone coughs or speaks – but surgical face coverings prevent 100%, report says Researchers looked at the effect of surgical masks and homemade single-layer cotton face coverings They simulated a mannequin speaking and coughing and then had six human volunteers … Read more