Face masks critical in preventing spread of COVID-..

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Face masks critical in preventing spread of COVID-19

https://www.sciencedaily.com/releases/2020/06/200612172200.htm

Face masks critical in preventing spread of COVID-19: Study found that wearing a face mask stopped person-to-person spread of the virus -- ScienceDaily

A study has found that not wearing a face mask dramatically increases a person's chances of being infected by the COVID-19 virus.