Donald Trump has changed America in many ways since his second term began a year ago. But perhaps in none so personally important as our overall health and health care. On February 25th 2025 the Senate confirmed Robert F. Kennedy Jr. as Secretary of Health and Human Services. Nearly a year later he has managed to dismantle or re-direct much of it. Among the multitude of public health agencies administered by H-H-S, the one where we’ve seen perhaps the biggest changes is the Centers for Disease Control and Prevention – or as we usually call it – the CDC.

Many experienced scientists and other employees have resigned or been let go. Many research grants to universities or non-profits - cancelled or cut back. And many long-term health policies have been changed. RFK Jr. has tried to promote a long debunked link between childhood vaccines and autism, and between Tylenol during pregnancy and autism. This last was definitively shot down this month by a retrospective study in the prestigious women’s health journal - Lancet. A meta-analysis of 60 studies found no association between Tylenol when taken as recommended and autism - as well as with intellectual disability or ADHD.

The other big area attacked by RFK Jr. and his appointees has been vaccines. For both adults and children. Routine recommendations have been removed from the CDC website and the members of the Advisory Committee on Immunization fired and replaced with RFK Jr’s choices. Including a number of vaccine skeptics.

Perhaps the most controversial change, posted in early January, is the Childhood Vaccine Schedule – reducing the number of routine vaccines from 17 diseases to 11. After much discussion - measles remained on the list – as a measles outbreak raged in South Carolina, doubling in just a week and spreading to at least 3 other states. The outbreak mostly among unvaccinated kids.

In late August a group of CDC senior officials and scientists resigned - after CDC Director Dr. Susan Monarez was fired. She refused to implement RFK Jr’s vaccine policy changes. And among those who walked away from their long-term CDC careers is my guest on this episode – Daniel Jernigan MD, MPH. Dr. Jernigan is a nationally recognized public health leader with more than 30 years at the CDC. Most recently he directed the National Center for Emerging and Zoonotic Infectious Diseases and the Influenza Division. He has led responses to major health crises including anthrax, SARS, H1N1, Ebola, MERS, and COVID-19. He’s authored over 160 scientific publications and is a recipient of the Service to America Medal. Dr. Jernigan is a graduate of Duke University, Baylor College of Medicine, and the University of Texas School of Public Health and has completed residencies in Internal Medicine and Preventive Medicine. Our conversation clarified a lot of now “murky” health issues.

YouTube Episode Link: https://youtu.be/3RtVJOq7K7I

YouTube Channel Link: @conversationsonhealthhowwe4827