Nearly 200 million Americans have received Covid-19 vaccines, and the discussion is shifting from the rollout to the aftermath. Is anyone really keeping track of who is immunized? — Dr. Sanjay Gupta, CNN Chief Medical Correspondent
Nearly 200 million Americans have received Covid-19 vaccines, and the discussion is shifting from the rollout to the aftermath. Is anyone really keeping track of who is immunized? — Dr. Sanjay Gupta, CNN Chief Medical Correspondent