Homemade coronavirus face masks should be two or three layers to stop spread of virus, study finds
A new study suggests that homemade face masks with two or three layers may be more effective in preventing the spread of the novel coronavirus compared with a single-layered face covering.
Researchers in Australia performed a video study comparing the effectiveness of different layers of cloth masks to surgical masks in their ability to stop the transmission of droplets in the air when speaking, coughing and sneezing.
The study, which was published in the journal Thorax., found the effectiveness varied in the cloth masks based on the number of the layers. The single-layer masks reduced spreading droplets from speaking, but the double-layer face covering was better at preventing the spread of droplets from coughing and sneezing, the authors stated.
The Australian researchers used a LED lighting system and a high-speed camera to capture the scattered droplets in the air expelled …continued .
[Source: Fox News]