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

An email obtained by NPR says NIH employees are subject to a travel freeze and offers of employment are being rescinded. Scientists worry about disruptions to critical research.

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

President Donald Trump's first week in office came with big changes to U.S. health agencies, including the pausing of all external communications and banning travel.

The Trump Administration has frozen many federal health agencies’ communications with the public until at least the end of the month.

One of the CDC's weekly health publications was not published on its regular schedule, and some data about flu and vaccinations wasn't updated.

The Trump administration ordered an immediate pause on public communications from federal health agencies like the CDC, FDA, and NIH. The U.S. Department of Health and Human Services (HHS) says it expects the pause to be temporary.

The University of Nebraska said it was waiting for more information about what a pause in activities at the National Institutes of Health and other agencies will mean for $151

The Trump administration told federal public health agencies like the CDC that they are not to communicate health messages for now. The hold includes memos, reports, online posts, website updates and other forms of communication. Scientific meetings were also canceled for the time being, including of advisory panels.

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.

Louisiana Gov. Jeff Landry has urged the U.S. Senate — including specifically Sen. Bill Cassidy, a fellow Republican from Louisiana — to support Robert F. Kennedy Jr., President Donald Trump's nominee to lead the U.S. Department of Health and Human Services.

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,