With the desire by many to "return to normal" settings & activities, that many like the WHO, advise us to avoid, CLEANING THE AIR in "3C settings" that are crowded, require close-contact, or are confined & enclosed, would likely have the most impact.

With the desire by many to "return to normal" settings & activities, that many like the WHO, advise us to avoid, CLEANING THE AIR in "3C settings" that are crowded, require close-contact, or are confined & enclosed, would likely have the most impact. @kprather88 pic.twitter.com/QflM7uS62d

— Vanessa Sica Kasabach (@VSicaKasabach) February 24, 2022