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The US Centers for Disease Control and Prevention strengthened recommendations for booster doses of coronavirus vaccine Monday, saying all adults should get boosted six months after the second dose of ...

The U.S. Centers for Disease Control and Prevention expects a refreshed booster vaccine to be available next month, but it remains to be seen whether the new shot will be able to snipe a highly ...

A third dose of the Pfizer/BioNTech COVID-19 vaccine can "strongly" boost protection against the delta variant -- beyond the protection afforded by the standard two doses, suggests new data released ...

With the Delta variant in play, federal health officials are analyzing the latest numbers to look at the frequency and seriousness of COVID-19 breakthrough infections. Will we need booster shots? And ...

COVID-19 vaccine makers have moved to expand their offerings in the United States and overseas. Novavax wants its vaccine’s U.S. authorization to extend to a booster shot, and the United Kingdom has ...

Scientists have produced the first data indicating that a variant that has raised alarm is unlikely to pose a big new COVID-19 threat. Four preliminary laboratory studies released over the weekend ...

A booster dose of the Pfizer-BioNTech COVID-19 vaccine appears to provide strong protection against the omicron variant, the companies announced Wednesday. They said lab study results show a third ...