Susan Monarez has stepped down as director of the Centers for Disease Control and Prevention after serving in the position for less than a month, making her the shortest-tenured director in the agency’s 79-year history.

Neither the agency nor Monarez have provided an official reason for her departure. The Department of Health and Human Services did, however, confirm her exit via a post on X on Wednesday afternoon.

“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. @SecKennedy has full confidence in his team at @CDCgov who will continue to be vigilant in protecting Americans against infectious diseases at home and abroad,” the post read.

Monarez’s brief tenure occurred during a period

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