KGO ABC World News Tonight With David Muir September 15, 2021 22:38:00
Pandemic and some ieagerly awaited results on the pfizer and moderna booster shots. pfizer is now recommending that booster for people 16 years and older, about six months after the second shot. moderna releasing its findings on booster shots, making a very similar recommendation tonight. but pfizer would be a full shot, moderna, a half shot. and we asked dr. jha why. but first here, the findings and here's abc's whit johnson. >> reporter: tonight, the fda releasing data from pfizer's booster trials as the company makes the case that americans will need a third shot. pfizer recommending that e...