“Nightline” co-anchor Byron Pitts breaks down the results of Pfizer’s phase 3 clinical trial with Dr. Richard Besser, the former acting director of the CDC.
Original source (ABC/Youtube)
“Nightline” co-anchor Byron Pitts breaks down the results of Pfizer’s phase 3 clinical trial with Dr. Richard Besser, the former acting director of the CDC.
Original source (ABC/Youtube)