If you've been hopping between arms for booster shots, a new study suggests that your lymph nodes remember exactly where you first got jabbed and perform far better when you return to that same arm.

Novavax on Wednesday received Food and Drug Administration authorization for a booster dose of its COVID-19 vaccine. Yet unlike the bivalent mRNA vaccines currently on the market, Novavax’s booster ...

Moderna is urging the US Food and Drug Administration to authorize a half-size booster of its Covid-19 vaccine, according to a briefing document posted Tuesday, ahead of a key meeting of the agency's ...

As we move into spring season, immunity gained through earlier COVID-19 vaccination can start to drop. The virus, although no longer causing widespread lockdowns, is still a significant health hazard, ...

Johnson & Johnson said Tuesday that a booster of its one-shot coronavirus vaccine provides a stronger immune response months after people receive a first dose. J&J said in statement that an extra dose ...