Food and Drug Administration officials say they will ratchet up requirements for vaccine studies, citing concerns about COVID shots for kids. But public health experts question the agency's analysis.

Health Secretary Robert F. Kennedy Jr. picks more new vaccine advisers to the Centers for Disease Control and Prevention, days before a two-day meeting to consider COVID and hepatitis B shots.

The Food and Drug Administration approved the next round of COVID-19 vaccines, but is restricting them to people at high risk for COVID complications.

The Food and Drug Administration gave the green light to two updated COVID-19 vaccines to protect against recent variants of the coronavirus.

A panel of doctors and scientists advising the Centers for Disease Control and Prevention voted to recommend that people 6 months of age and older get new COVID boosters this fall.

Returning from a prolonged absence on Monday, Cavuto — who is immunocompromised — said COVID-19 pneumonia had landed him in the intensive care unit and credited the vaccine with saving his life.

Even as wealthy countries hit 80% vaccination rates, a number of countries have not even vaccinated 1 in 10 citizens. Our interactive map shows the vaccination landscape.

Omicron has many more mutations than previous variants of concern, a fact that raises questions about how effective existing vaccines will be against the new form of the coronavirus.

Cavuto, who is immunocompromised, encouraged viewers to get vaccinated against COVID-19 after announcing his own breakthrough infection. When he returned to the air, he brought their emails with him.

CDC Director Rochelle Walensky also endorsed a mix-and-match approach to boosters that would be flexible for patients and health care providers.

The Food and Drug Administration also gave an OK to boosters that differ from the vaccine originally used to immunize people against COVID-19. A mix-and-match approach could ease the booster rollout.

The Food and Drug Administration released briefing documents Tuesday on booster shots for the Moderna and Johnson & Johnson COVID vaccines ahead of a two-day advisory meeting that starts Thursday.

As religious exemptions are now being sought in droves, their use raises concerns that they pose a serious public health risk. But some say vaccine mandates are too much, too soon.

Lewis County General Hospital in upstate New York is pausing maternity services later this month after dozens of staff members quit because they refused to get a COVID-19 vaccine.

The Department of Health and Human Services said it is recommending a third dose of the Pfizer and Moderna vaccines "to maximize vaccine-induced protection and prolong its durability."