Blue surgical face masks are only 10% effective in preventing COVID infection, new study finds

 

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Surgical mask

N95 mask

Masks Don’t Work: A Review of Science Relevant to COVID-19 Social Policy

 There have been extensive randomized controlled trial (RCT) studies, and meta-analysis reviews of RCT studies, which all show that masks and respirators do not work to prevent respiratory influenza-like illnesses, or respiratory illnesses believed to be transmitted by droplets and aerosol particles.