Measles cases rise nationwide with outbreaks linked to low vaccination rates

CBS News Bay Area reported that the U.S. is experiencing the highest number of measles cases in over 30 years in 2026, with more than 4,500 cases by October. This surpasses the previous record set in 2025, which had over 2,200 confirmed cases.

The Centers for Disease Control and Prevention data, as reported by CBS News, indicate that the majority of measles cases occur among unvaccinated individuals. Outbreaks have spread in multiple states, putting the U.S. at risk of losing its official measles elimination status held since 2000.

Measles is highly contagious and can cause severe complications such as lung and brain infections, cognitive issues, deafness, or death. Vaccination is proven safe and effective in preventing the disease, yet vaccination rates have slightly declined, contributing to the outbreaks.

CBS News noted that in 2025, 92.4% of U.S. kindergartners received the measles-mumps-rubella vaccine, a slight decrease from the previous year. Lower vaccination rates in certain communities are cited by health experts as the main reason for the increase in measles cases.

While the report highlights outbreaks in various states, including California, it does not specify impacts directly within San Jose or the immediate Bay Area. Residents are encouraged to ensure vaccinations are up to date to help prevent further spread.