Researchers say even homemade masks with limited effectiveness can dramatically reduce transmission rates.
— Read on www.sciencefocus.com/news/face-mask-use-needed-to-prevent-covid-19-second-wave/
Researchers say even homemade masks with limited effectiveness can dramatically reduce transmission rates.
— Read on www.sciencefocus.com/news/face-mask-use-needed-to-prevent-covid-19-second-wave/