Masks can cause bacterial pneumonia and harbor viruses. Please take your health seriously, and Do Not Wear One! User ANIKAHirsch, in the Free-thinkers resisting the New Normal subreddit, 25 Oct 2020
Contamination by respiratory viruses on outer surface of medical masks used by hospital healthcare workers | BMC Infectious Diseases User BlondFaith, in the Science, not politics and fear subreddit, 11 May 2020
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? User trilli0nn, in the Novel Coronavirus (COVID-19) subreddit, 09 May 2020