NEW YORK (AP) — The director of the nation’s top public health agency is out after less than one month in the job, U.S. officials announced Wednesday.

“Susan Monarez is no longer director of the Centers for Disease Control and Prevention. We thank her for her dedicated service to the American people,” the U.S. Department of Health and Human Services wrote on social media.

HHS officials did not explain why Monarez is no longer with the agency.

Before the department’s announcement, she told The Associated Press: “I can’t comment.”

Monarez, 50, was the agency’s 21st director and the first to pass through Senate confirmation following a 2023 law. She was named acting director in January and then tapped as the nominee in March after Trump abruptly withdrew his first choice, David Weldon.

She was sworn in on July 31 — less than a month ago, making her the shortest-serving CDC director in the history of the 79-year-old agency.