Face masks ward off covid-19, so why are we still arguing about it?

The most recent review into the effectiveness of face masks has confirmed that they do help to prevent covid-19, but the intervention remains a controversial issue

​The most recent review into the effectiveness of face masks has confirmed that they do help to prevent covid-19, but the intervention remains a controversial issue The most recent review into the effectiveness of face masks has confirmed that they do help to prevent covid-19, but the intervention remains a controversial issue