Measles Outbreak Hits Northern California

First measles outbreak in the state in over 5 years prompts vaccination push

Published on Feb. 10, 2026

Got story updates? Submit your updates here. ›

An outbreak of 8 measles cases in Shasta County, California is the first measles outbreak in the state in at least 6 years. The outbreak has prompted state health officials to urge all residents to check their vaccination status against the highly contagious viral disease.

Why it matters

Measles outbreaks can spread quickly in communities with low vaccination rates. This outbreak marks a notable uptick in measles cases in California, mirroring a nationwide resurgence of the disease that threatens the U.S. elimination status.

The details

All 8 cases in Shasta County were in unvaccinated people or those with unknown vaccination status. Two recently infected individuals visited Disneyland on January 22 and 28 while infectious, prompting health officials to work with the theme park to notify employees and visitors who may have been exposed.

  • The first case in Shasta County was announced on Wednesday, February 8, 2026.
  • As of Monday, February 10, 2026, 17 measles cases have been reported in California so far this year.

The players

California Public Health Officer Dr. Erica Pan

Encouraged families to make sure everyone gets up to date on their MMR vaccines to protect children and communities.

Shasta County

The county where the 8 measles cases were reported, marking the first measles outbreak in California in at least 6 years.

Got photos? Submit your photos here. ›

What they’re saying

“As a pediatrician and parent, I encourage families to make sure everyone gets up to date on their MMR vaccines if they haven't already. We all need to work together to share the medical evidence, benefits and safety of vaccines to provide families the information they need to protect children and our communities.”

— Dr. Erica Pan, California Public Health Officer

What’s next

Local health officials are working with Disneyland to notify employees and visitors who may have been exposed to the measles cases.

The takeaway

This outbreak highlights the need for continued vigilance and high vaccination rates to prevent the spread of measles, which was once declared eliminated in the U.S. but is now at risk of resurgence across the country.