We need to be wearing them when indoors with strangers, from now until there is a vaccine.
Link: https://www.sfgate.com/science/article/Study-100-face-mask-use-could-crush-second-15333170.php?fbclid=IwAR19ojrboVrbKB_sFbj7rqFHl1ZGj5aC99RbhvhV8Hh-xBbMICghj-hFWU8