https://health.ucdavis.edu/health-n...s-and-social-distancing-slow-covid-19/2020/07 "Along with preventing someone from transmitting the coronavirus, a range of new research shows that the risk of infection to the wearer is decreased by 65%, said Dean Blumberg, chief of pediatric infectious diseases at UC Davis Children’s Hospital. “On the issue of masks, I’d like to restart because we’ve learned a lot,” Blumberg said. “We’ve learned more due to research and additional scientific evidence. What we know now is that masks work and are very important.”" "“Everyone should wear a mask,” Blumberg said. “People who say ‘I don’t believe masks work’ are ignoring scientific evidence. It’s not a belief system. It’s like saying, ‘I don’t believe in gravity.’ “People who don’t wear a mask increase the risk of transmission to everyone, not just the people they come into contact with,” he said. “It’s all the people those people will have contact with. You’re being an irresponsible member of the community if you’re not wearing a mask. It’s like double dipping in the guacamole. You’re not being nice to others.”"