CDC Adds 178 Measles Cases as Vaccine Policy Turmoil Deepens

Federal health authorities added 178 new measles cases this week, a figure that lands amid a widening outbreak and growing scrutiny of how the government counts and responds to the disease. The Centers for Disease Control and Prevention (CDC) reported 4,588 cases nationwide for 2026 as of Friday, more than double the count recorded for all of 2025.

The spread remains active across at least 43 outbreaks. Pennsylvania reported 1,338 cases on the same day, while South Carolina and Utah are each reporting more than 500 cases. Health experts say the official figures almost certainly undercount infections. Measles ranks among the most contagious illnesses known to medicine, and its early signs, a rash, runny nose, fever and cough, may not prompt a doctor visit right away.

The human toll is serious. About one in five unvaccinated people who get sick ends up in the hospital, and complications from measles kill one to three people per 1,000 infected. The vaccine used to prevent it is 97% effective, with side effects limited to injection-site soreness and low-grade fever. It has been a focus of anti-vaccine activism for decades.

Pennsylvania, which has carried the worst outbreak in the country for months, has reported five measles-associated deaths and is investigating a sixth. The CDC lists three deaths nationally but has declined to say where the third occurred, leaving it unclear whether that case is counted in Pennsylvania or another state. Reuters reported that health secretary Robert F Kennedy Jr asked senior CDC officials in September to remove a measles death from the tally after he questioned whether the disease contributed to it.

At the same time, the Department of Health and Human Services announced changes this week to vaccine injury reporting systems. A proposal would allow doctors to bill for reporting suspected vaccine injuries, among other changes. The vaccine adverse event reporting system, known as VAERS, helps researchers track rare safety issues but has also become a source of unfounded claims used by anti-vaccine activists. Before Kennedy took the job, an expert panel weighed each vaccine change to decide whether benefits outweigh risks. He dismissed all 17 sitting members of that board and named ideological allies in their place, an appointment a court blocked in March.

Kennedy has also drawn criticism on vaccine safety messaging. He has claimed children receive more than 90 vaccine doses, linked vaccines to autism despite extensive evidence against that link, directed the CDC to remove statements that vaccines do not cause autism from its website, described the measles, mumps and rubella vaccine as containing aborted fetal debris, and said vitamin A and cod liver oil may help children with measles, guidance leading physicians called misleading. As the outbreak grows, the tally of cases and deaths remains contested, and the infrastructure built to prevent and track vaccine injury is being rewritten.