The Hill | July 17, 2021
“When you’ve got COVID cases rising and you’ve got a plateau in your vaccination coverage, that’s a really blaring safety signal,” said Lawrence Gostin, a professor of global health law at Georgetown University. “And the only way you can get on top of it is a mask mandate because except for vaccinations, universal indoor masking is the best tool we have in public health.”
Gostin noted that if fully vaccinated people have enough exposure to the virus, they could also be at risk of getting sick. The more the delta variant circulates among unmasked, unvaccinated people, the more exposure vaccinated people have.
“Those cumulative exposures will make for more breakthrough infections and particularly for older, more vulnerable populations that could be at risk,” Gostin said.