The U.S. Food and Drug Administration is expected to allow Americans to get a different COVID-19 booster shot than the one they initially received.
The New York Times reports that the "mix-and-match" approach is expected to be given the green light this Wednesday.
The same report says that the FDA will not recommend one vaccine over the other but may advise people receive the same vaccine as a booster shot.
However, a study last week showed that a booster shot from a different vaccine prompts a stronger antibody response.
For people initially inoculated with the Johnson and Johnson vaccine, antibody levels were 76 times higher after getting a Moderna booster shot.