WASHINGTON The Biden administration is planning to give Americans age 50 or older the option of a second booster of the Pfizer or Moderna coronavirus vaccine without.
After fraught discussions, officials decided that another shot might save thousands of lives if a new coronavirus wave hit before the fall. The F.D.A. could authorize the boosters next week.
Over the past 10 months, as tens of millions of children and teenagers received the Pfizer-BioNTech vaccine, the companies’ main rival, Moderna, sat on the sidelines, its shot limited to adults. But Moderna may now be poised for a comeback at a critical juncture in the nation’s vaccination campaign. The company is expected to send federal officials initial data this week on