Reason22d
Do Face Masks Work?
They assigned half of their cohort of nearly 5,000 subjects ... The researchers reported that 163 participants of 2,371 assigned to wear face masks versus 239 of 2,276 of non-wearers self-reported ...
Business Insider4y
Respirators are more effective than surgical masks at protecting against infection — here's how they work and who should wear them
Respirators, more commonly known as face masks, are meant to keep health care and emergency workers safe from chemicals and infectious particles. Surgical masks can be helpful if you are sick ...