Wafaa El-Sadr, MD, MPH, MPA reinforces the need to wear masks indoors as the government issues new guidelines.

“If somebody does have to be indoors, keep the mask on (as much as possible) and only pull the mask down when eating and drinking,” said Dr. Wafaa El-Sadr, director of ICAP at Columbia University and a professor of epidemiology and medicine at the Columbia Mailman School of Public Health, in March. “Pay attention to distancing between people, and ventilation as well. It behooves everybody to suppress transmission of this virus.”