CDC logs 4,588 US measles cases as state and federal death counts diverge

The Centers for Disease Control and Prevention reported 4,588 confirmed measles cases in the United States as of Friday, a total that exceeds the entire 2025 count by more than half. The agency recorded an additional 178 cases in the latest weekly update. These figures span at least 43 active outbreaks across the country.

A discrepancy exists between state and federal mortality data. Pennsylvania, which reports the highest number of cases at 1,338, has confirmed five measles associated deaths and is investigating a sixth. The CDC lists three national deaths but has not identified the location of the third case, creating ambiguity about whether that death is included in the Pennsylvania tally.

Health Secretary Robert F. Kennedy Jr. reportedly directed senior CDC officials in September to remove one measles death from the official records. According to Reuters, Kennedy questioned whether the disease was a contributing factor in the specific case. This action adds to expert criticism of the agency's transparency during the current surge.

The federal tally is likely an undercount of the actual disease burden. Measles is highly contagious, and symptoms such as fever, cough, and rash often do not prompt immediate medical visits. Medical data indicates that one in five unvaccinated infected individuals requires hospitalization. Between one and three people in every 1,000 infected individuals die from complications.

The measles vaccine is 97% effective at preventing infection. Common side effects include soreness at the injection site and a low-grade fever. Large outbreaks are also currently active in South Carolina and Utah, with both states reporting more than 500 cases each.

The Department of Health and Human Services announced changes to the vaccine adverse event reporting system this week. A new proposal allows physicians to bill for reporting suspected vaccine injuries. This system, known as VAERS, has long been used by researchers to track rare safety issues, though it is also frequently cited by anti-vaccine activists to claim links between vaccines and various health conditions.

Kennedy replaced all 17 members of the expert panel that evaluates vaccine risks and benefits with ideologically aligned individuals. A court blocked those appointments in March. During his tenure, the secretary has made public claims that children receive more than 90 vaccine doses, that the measles, mumps, and rubella vaccine contains aborted fetal debris, and that cod liver oil may aid children with measles.