Homemade face masks should ideally be made from multiple layers of fabric to trap the virus-laden nose and mouth droplets associated with the spread of Covid-19. This was the result of a study.
Scientists in Australia compared the effectiveness of one- and two-layer fabric facewear with a surgical mask. Using a bespoke LED lighting system and high-speed video camera, they showed that a single layer reduced the spread of droplets when speaking, but less than a double layer.
⚡️😷 What is the best homemade facial mask to contain # Covid19?
Here's what happens when you cough, sneeze, and speak in different face coverings, scientists found
– Bloomberg QuickTake (@QuickTake), July 24, 2020
A double layer was also "significantly better" in reducing the spread of droplets caused by coughing and sneezing, although a three-layer surgical mask was the best of all the scenarios tested, said researcher led by Raina MacIntyre at the University of New South Wales at Sydney in an article published in Thorax magazine on Thursday.
Face masks are designed to protect healthy people from inhaling infectious droplets and to reduce the spread of people who are already infected.
The worldwide shortage of protective equipment has prompted US disease control and prevention centers and other health agencies to recommend homemade fabric covers as an alternative to surgical face masks.
(This story was not edited by NDTV staff and is generated automatically from a syndicated feed.)