President Trump's incoming CDC leadership includes Dr. Sara Brenner, an FDA official and physician who has publicly questioned vaccine safety and efficacy. Brenner identifies as a "MAHA mom," part of a movement skeptical of mainstream health recommendations, particularly regarding vaccines.
Brenner has stated that people should not automatically trust vaccine benefits, a position that contradicts decades of peer-reviewed research demonstrating vaccine effectiveness in preventing serious diseases. The CDC director role oversees the nation's disease surveillance and public health response, making vaccine confidence central to the position's responsibilities.
Public health experts have raised concerns about appointing vaccine skeptics to leadership positions at agencies responsible for immunization policy and disease prevention. Vaccine hesitancy already contributed to measles outbreaks in multiple U.S. communities between 2019 and 2022, after the disease had been declared eliminated in the country.
Brenner's appointment signals a potential shift in how the CDC communicates about vaccines. The agency has historically emphasized vaccination as a cornerstone of disease prevention based on clinical evidence from millions of doses administered globally.