CEO "comfortable" Pfizer COVID-19 vaccine protects against more severe Delta variant
June 14, 2021 / 7:20 AM / CBS News
The Pfizer CEO said a need for booster shots to existing vaccines has not yet been determined, but studies were running to find out whether it was necessary.
But based on the data, he said Pfizer is anticipating people will need a booster shoot — essentially a third dose — within eight to 12 months of their second shot.