A dramatic shake-up is unfolding at the Centers for Disease Control and Prevention -- and it's happening in real time. On Wednesday, the long-trusted agency saw multiple senior leaders resign or face removal under pressure, with staff staging an emotional send-off that drew national attention.
CDC Director Susan Monarez, just four weeks into her role, was reportedly pushed out. But the details are far from settled. Her lawyers say she was neither fired nor resigned -- adding that only the President can remove her directly. Yet the administration appears to be moving forward without her.
It didn't stop there. Within hours, four senior officials followed suit. One of them, Chief Medical Officer Debra Houry, joined others in turning in resignation letters that quickly spread online. Their message? The agency was no longer being allowed to operate based on science.
In one letter, Dr. Demetre Daskalakis, head of the CDC's National Center for Immunization and Respiratory Diseases, wrote that the environment had become one that "treats CDC as a tool" for non-scientific decisions. He cited major changes to vaccine recommendations and advisory panels as key breaking points.
Then came the "clap out."
Hundreds of CDC employees gathered in support of the departing leaders. They stood outside the agency's headquarters, clapping, in what staff described as a powerful but silent protest. Cameras streamed the moment live, and images from the scene quickly spread across social media.
Many federal employees can't legally walk off the job. But this gesture was the clearest sign yet that morale at the CDC has shifted.
And the controversy isn't just about resignations. It's also about what's replacing the old leadership. Since returning to office, President Donald Trump has taken significant steps to cut funding and staff at public health agencies. He has done so with the help of Robert F. Kennedy Jr., a known vaccine skeptic and the current head of the Department of Health and Human Services.
Critics of these moves argue that decisions about vaccines and diseases are now being shaped more by politics than science. This week, NBC News revealed that the CDC's foodborne illness monitoring program was scaled back months ago. The agency is now reportedly tracking just two of the eight pathogens it once monitored regularly.
Meanwhile, questions remain about Monarez's legal status. Her attorneys say she was pressured to fire several staff, which may include the same officials who chose to leave. In a public statement, her legal team called the administration's actions "reckless" and claimed Monarez was protecting both science and public health.
At a press briefing, White House Press Secretary Karoline Leavitt responded to questions about Monarez by saying the president has the right to dismiss leaders who do not align with his mission.
Inside the CDC, those remaining say the situation has reached a tipping point. Former medical officer Houry confirmed that she, Daskalakis, and Dr. Daniel Jernigan coordinated their exits to bring more attention to what they believe is the agency's growing crisis.
"This wasn't something we did lightly," she said during the "clap out." "We knew it would send a message."