Small study questions efficacy of cotton, surgical masks at stopping spread of SARS-CoV-2

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Small study questions efficacy of cotton, surgical masks at stopping spread of SARS-CoV-2

Surgical and cotton masks were ineffective at preventing the dissemination of SARS-CoV-2, the virus that causes COVID-19, according to a research letter published in Annals of Internal Medicine . Researchers recruited four patients from South Korea with COVID-19. Two […]

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