Yet another detailed study indicating masks not only do not stop the spread of Covid, they actually might make it worse. Read actual scientific and medical literature people. Do not get your medical advice from WaPo, NYT, CNN, ABCNBCCBS, Facebook or Google. Masks do NOTHING and may actually put you at risk. Masks are a form of control and are a placebo. Wash your hands, don’t touch your face, and stay clear of sick people. Those are things that work.