The spread of new strains raises new questions as two COVID-19 vaccines continue their rollout across the U.S. and another vaccine candidate preps for regulatory review. Here’s what you need to know.
(Image credit: Mario Tama/Getty Images)
The spread of new strains raises new questions as two COVID-19 vaccines continue their rollout across the U.S. and another vaccine candidate preps for regulatory review. Here’s what you need to know.
(Image credit: Mario Tama/Getty Images)