bivalent vaccine
Tuesday
Monday
The new booster shot would be an update to Pfizer's current version of the shot, which was designed for the original strain of the coronavirus. Nam Y. Huh/AP hide caption
Thursday
The Biden administration plans to offer updated booster shots in the fall. Mario Tama/Getty Images hide caption
Summer boosters for people under 50 shelved in favor of updated boosters in the fall
Tuesday
A health care worker prepares the current COVID vaccine booster shots from Moderna in February. The company says a bivalent vaccine that combines the original strain with the omicron strain is the lead candidate for a fall vaccination campaign. Bloomberg/Bloomberg via Getty Images hide caption