This 16 minute podcast (#142) is really worth listening to; looks like wearing a mask may help a lot more than we first understood.
From the John Hopkins School of Public Health: Dr. Monica Gandhi, an infectious disease researcher at the University of California at San Francisco, argues that a key to beating COVID-19 is increasing the proportion of infections that cause no symptoms. But how? Dr. Gandhi explains to Dr. Josh Sharfstein the answer may be as simple as having more people wear masks.
Public Health Podcast Page (go to #142 in listing): https://www.jhsph.edu/podcasts/public-health-on-call/