Every study for the last 40 years has shown masks are useless against viruses. And specifically with regard to Corona, there were multiple studies months ago all showing cloth masks either slightly increase your risk of infection, or make a negligible increase to your chance of infection.
'Finally' is misleading.
Every study for the last 40 years has shown masks are useless against viruses. And specifically with regard to Corona, there were multiple studies months ago all showing cloth masks either slightly increase your risk of infection, or make a negligible increase to your chance of infection.