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Covid-19 2020-05 part three
Wearning Masks for Covid-19, through May 2020
Breathing
a face mask may trap a virus or concentrate CO2
web
web
https://www.sciencetimes.com/articles/25713/20200518/wearing-face-masks-potentially-harmful-trap-exhaled-viruses-well-individuals.htm
publication
Science Times
date
2020-05-18
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