US Measles Cases Reach 4,588 as Pennsylvania Reports Five Deaths

The Centers for Disease Control and Prevention reported 178 new measles cases in the United States this week. The agency’s total for 2026 stands at 4,588 cases as of Friday. This figure is more than double the tally recorded for the previous year.

The disease is currently active in at least 43 separate outbreaks. Pennsylvania accounts for the largest share of cases, with state authorities reporting 1,338 infections on the same day. South Carolina and Utah also face major outbreaks, with both states recording more than 500 cases each.

Data discrepancies exist between federal and state records regarding mortality. Pennsylvania has reported five measles-associated deaths and is investigating a sixth. The CDC has recorded three measles deaths nationally but has not specified the location of the third case. This lack of clarity prevents confirmation of whether the federal count includes a Pennsylvania death or one from another state.

Experts have criticized the CDC for its lack of transparency during the ongoing surge. According to Reuters, Health Secretary Robert F. Kennedy Jr. asked senior CDC officials in September to remove one measles death from the official tally. He questioned whether the disease contributed to that specific death.

Measles is highly contagious and causes symptoms such as rash, fever, and cough. One in five unvaccinated infected individuals requires hospitalization. Between one and three people in 1,000 die from complications. The measles vaccine is 97% effective, though it can cause injection-site soreness and low-grade fever.

The Health and Human Services Department announced changes to vaccine injury reporting systems this week. A new proposal allows doctors to bill for reporting suspected vaccine injuries. The Vaccine Adverse Event Reporting System, or VAERS, is used by researchers to track safety issues but is also cited by anti-vaccine activists.

Kennedy replaced all 17 members of the expert panel that evaluates vaccine risks and benefits with ideologically aligned candidates. A court blocked those appointments in March. During his tenure, Kennedy has made various claims, including that children receive more than 90 vaccine doses and that the MMR vaccine contains aborted fetal debris.

The federal data reflects the current spread of the illness, which continues to affect communities across the country despite high vaccine efficacy. The divergence between state and federal death counts remains a point of contention among public health officials.