Biden Officials Now Expect Vulnerable Americans to Need Booster Shots
By BY SHARON LAFRANIERE
U.S.
https://ift.tt/2VcI37S
The growing consensus that at least some Americans will need a booster is tied in part to research suggesting that Pfizer’s vaccine is less effective after about six months.
New York Times
Vaccination and Immunization, Coronavirus (2019-nCoV), Clinical Trials
July 23, 2021 at 11:33PM