Starting six months past their last Pfizer or Moderna vaccination, people are urged to get a booster if they’re 65 or older, nursing home residents, or at least 50 and at increased risk of severe disease because of health problems.
As for recipients of the single-shot J&J vaccine, a COVID-19 booster is recommended for everyone at least two months after their vaccination.That’s because the J&J vaccine hasn’t proved as protective as the two-dose Moderna or Pfizer options.
The vast majority of the nearly 190 million Americans who are fully vaccinated against COVID-19 have received the Pfizer or Moderna options, while J&J recipients account for only about 15 million.