A number of other health agencies are also operating without acting heads, including the FDA and the National Institutes of Health.

Scientific researchers around the country are concerned after the National Institutes of Health canceled meetings this week with very little explanation. The move comes after federal health officials were told to halt public communications until they could be reviewed by a Trump appointee.

Federal health officials have been instructed to temporarily stop any “external communications” to the public, according to two officials with knowledge of the situation.

All communication from federal health agencies will be paused until Feb. 1 while the new Trump-Vance administration catches up.

The new administration has reportedly asked federal health agencies to stop all external communications pending a review.

The U.S. Department of Health and Human Services has paused public communications until Feb. 1 as Trump appointees take control of health agencies.

According to agency officials and knowledgeable people, the Trump administration has directed federal health agencies to freeze external communications, including weekly scientific reports, health advisories and website updates.

The Trump administration is expected to tap Susan Coller Monarez, the deputy director of a federal health research agency, to serve as the acting head of the Centers for Disease Control and Prevention,

Scientific meetings were canceled, and research data on the bird flu outbreak was delayed, amid confusion over the directive.

President Trump ordered a pause on communications from several federal health organizations, including the FDA, the CDC, and the National Institutes of Health.

An executive order from President Trump freezes all mass communication from the Centers for Disease Control and Prevention unless it’s approved by the White House.

The Trump administration’s freeze on communications from U.S. health agencies is leading to another disruption: the abrupt cancellation of scientific meetings. The move covers a swath of health conditions,