2026 is already the deadliest year for measles in the United States since the virus was declared eliminated in 2000. Four people died over the last month in Pennsylvania amid an ongoing outbreak in the state, which had not seen a measles-related death in at least 35 years. All four victims, including two infants, were unvaccinated (children do not receive their first dose of the measles vaccine until they have reached a year old). The deaths come as President Trump and Health and Human Services Secretary Robert F. Kennedy Jr. continue to defund public vaccination programs and push debunked claims that vaccines cause autism. Pediatrician and vaccine expert Dr. Paul Offit warns that the four reported measles deaths — which were reported by Pennsylvania health officials but have not yet been acknowledged by the Centers for Disease Control and Prevention — are likely a vast undercount. He estimates that there could be “closer to 4,000” cases in the Pennsylvania outbreak. “I don’t think people realize how contagious this virus is,” Offit says. “You don’t have to have direct contact with somebody who has measles. You just have to be within their airspace within two hours of them being there.” We also speak to Offit about the COVID-19 virus, which he says is now affecting the United States “like flu” by causing “hundreds of thousands of people to be hospitalized and tens of thousands to die, just like influenza does, every year.” Yearly flu and COVID-19 vaccinations, he explains, are “effective at keeping people out of the hospital, effective at keeping them out of the intensive care unit, and effective at keeping them out of the morgue.”