20 million Americans eligible for third Pfizer shot
The White House says 20 million Americans are now eligible for a third shot of the Pfizer vaccine. Those who are 65 or older, at an increased risk for exposure or have high-risk conditions are among the eligible. CDC Director Rochelle Walensky overruled an advisory panel and approved a booster shot for frontline workers, including health care workers and teachers. Michael George has the latest.