The U.S. has officially withdrawn from the World Health Organization (WHO), a process initiated by President Trump’s executive order a year ago.

The Department of Health and Human Services criticized the WHO for straying from its mission, delaying its COVID-19 response, and unfairly criticizing U.S. pandemic measures.

Public health experts warn that leaving the WHO will weaken U.S. efforts to track infectious diseases, respond to outbreaks like Ebola, and match vaccines to circulating flu strains.

The U.S. plans to continue global health work through its own staff and bilateral agreements, but owes over $270 million in dues for 2024–2025, ABC News has reported.

There are no current plans to rejoin the WHO or participate as an observer, and the country’s involvement in upcoming WHO flu initiatives is uncertain.