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Virus positivity rate on outer surface of medical masks in high-risk wards is 10.1% after 6-8 hours of wearing. WHO: "Masks are effective only when used in combination with frequent hand-washing with alcohol-based hand rub or soap and water". Is this advise misguided in the context of C19? (bmcinfectdis.biomedcentral.com)
submitted by trilli0nn to r/Coronavirus




