The cancellation plays into fears among scientists who worry that Robert F. Kennedy Jr. will use his position as health secretary to sow doubts about vaccines.

Trump officials have canceled a federal vaccine advisory committee meeting expected to be held next month that was intended to help select the makeup of next winter’s influenza vaccine. This is the second federal vaccine advisory panel that has been postponed or canceled since Robert F.

It comes as RFK Jr., a vaccine skeptic who now leads the Department of Health and Human Services, makes moves that could affect vaccination uptake and policy.

A meeting of a committee which advises the U.S. Food and Drug Administration on vaccine policy has been canceled, a committee member told Reuters, the second such disruption to a federal vaccine advisory panel since Robert F.

A March meeting of outside advisers to the United States Food and Drug Administration to discuss the composition of flu vaccines for this fall’s flu season has been canceled, a member of the advisory committee told CNN.