May 17, 2021, 3:07 p.m. ET
The C.D.C.’s updated masking guidelines are adding to the confusion about who should cover up, and when.Credit.Ashley Gilbertson/VII for The New York Times
By Linsey Marr, Juliet Morrison and Caitlin Rivers
Dr. Marr is a professor of civil and environmental engineering at Virginia Tech. Dr. Morrison is a virologist at the University of California, Riverside. Dr. Rivers is an epidemiologist at the Johns Hopkins Center for Health Security.
The Centers for Disease Control and Prevention recently announced that fully vaccinated people do not need to wear masks in most indoor and outdoor settings, while still following federal, state and local rules.