To mask or not to mask? Do I still have to wear a mask indoors? When I’m in a large group, how do I know who is vaccinated? Just some of the questions the public is asking following the CDC’s latest changes to masking guidelines. The answers to what to do and what not to do can be confusing.

Larry J. Shapiro Director of the Institute for Public Health and co-director of the Division of Infectious Diseases, William G. Powderly, MD was recently the featured guest of the Department of Medicine’s Show Me the Science podcast regarding the new guidelines and what they mean for the WashU community and the public.