A March meeting of outside advisers to the US 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.

The U.S. Food and Drug Administration confirmed on Thursday that a meeting of its independent advisory panel to discuss the composition of this year's flu vaccine has been canceled and the regulator would instead make recommendations later.

The Food and Drug Administration unexpectedly canceled an annual meeting of its advisers to update next season's influenza vaccines, raising concerns about the timeline for manufacturing next winter's flu shots.

The meeting is the second federal vaccine panel meeting Trump administration officials have canceled or postponed since RFK Jr. took over HHS.

The FDA canceled a critical annual flu vaccine planning meeting without explanation days after Robert F. Kennedy Jr. took control of HHS.

Epidemiologist Michael Osterholm, the head of the University of Minnesota Center for Infectious Disease Research and Policy, joined Morning Edition host Cathy Wurzer to talk about the implications of axing the meeting.

The Food and Drug Administration (FDA) abruptly canceled a vaccine advisory meeting where members were slated to discuss influenza vaccine strains. The meeting was scheduled for March 13.

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.

The Vaccines and Related Biological Products Advisory Committee was supposed to meet on March 13 to recommend to the agency which flu strains should be included in influenza shots for the Northern Hemisphere’s next flu season.

The FDA’s abrupt decision to cancel next month’s vaccine advisory committee meeting is raising concerns about whether the U.S. will have enough of the vaccine for the next flu season.