Federal health officials are convening with outside advisers April 6 to talk about a vaccine plan, whether that's another booster in the fall, an omicron shot or one that targets more than one strain.
Some countries are moving ahead with plans to offer a fourth dose of COVID-19 vaccine. But studies are raising questions about the potential advantages of this extra booster.
Researchers in the U.K. have the first estimates for how long a third shot of the Pfizer vaccine will last. The findings are mixed.
Vaccines still do a solid job at warding off hospitalization from omicron. So if you're young and healthy, why get a booster? Scientists explain how boosters help and the best timing to get one.
The Moderna vaccine's ability to shield against infection drops sharply when tested on the omicron variant. But getting a booster pumps the protection back up again, new research suggests.
Scientists are watching how Portugal and other highly vaccinated countries are faring against the coronavirus' new omicron variant.
Vaccine and booster side effects can include fever, aches and fatigue. And this may be the first vaccine in history where people complain if they don't experience side effects, says one doctor.
In small studies in South Africa and in Germany, the results indicate a marked decrease in the ability of vaccines to neutralize this variant. But there are other findings that are encouraging.
There's serious concern about the effectiveness of vaccines against the omicron strain. But there's also reason to be hopeful — especially for those who've had a booster.
Does a booster shot mean that you can go back to ... normal? Or is there still a newish kind of normal to face?
The companies say a study of more than 10,000 volunteers showed a vaccine efficacy of 95% or greater for people receiving the booster.
After vaccination, antibody levels can help predict how much protection a COVID-19 shot offers, scientists are learning. The finding could speed up the development of future vaccines.
People will be eligible for a booster shot eight months after their second dose of their vaccines from Pfizer or Moderna, according to U.S. health officials.
A source familiar with the discussions says administration health experts could make the recommendation for fully vaccinated adults as soon as this week.
People are doing it. They're telling lies to get shots that have not been authorized. What are the medical, practical and ethical implications?