California Measles Cases Hit 52 in 6 Months as Travel and Low Vaccination Drive Spread
Updated
Updated · Los Angeles Times · Jul 23
California Measles Cases Hit 52 in 6 Months as Travel and Low Vaccination Drive Spread
3 articles · Updated · Los Angeles Times · Jul 23
Summary
California has confirmed 52 measles cases in the first 6½ months of 2026, already more than double the 25 reported in all of 2025 and on pace for the state's highest total since 2015.
Forty-nine of the 52 patients were unvaccinated or had unknown vaccination records, four were hospitalized, and most cases involved children and young adults, including 15 children under 5.
A newly reported Orange County juvenile who arrived from Cancún on Delta Flight 614 was contagious while passing through LAX on July 16, prompting exposure alerts for the international terminal and baggage claim through Aug. 6.
International travel has also figured in at least two infant cases this year, and officials are urging early MMR shots for babies 6 to 11 months old and accelerated second doses for some young travelers.
Nationally, 2,260 measles cases had been reported by mid-July, nearly matching 2025's 2,289 total, with the CDC saying 93% of confirmed cases are tied to outbreaks.
With its measles-free status at risk, can the U.S. avert this public health crisis?
How does measles cause 'immune amnesia,' leaving children vulnerable to other deadly infections?
2026 Measles Outbreak in California: How Falling Vaccination Rates and Federal Policy Changes Threaten Public Health
Overview
In 2026, California is facing a serious measles resurgence, with confirmed cases and exposure warnings in major cities. Public health officials are working hard to stop the spread, especially after a case was linked to Los Angeles International Airport. They are identifying exposure sites and monitoring those at risk, with a special focus on protecting infants who are too young for vaccination. The situation highlights how international travel and gaps in vaccination rates make certain groups more vulnerable, showing the urgent need for higher community immunity to protect everyone, especially the most at-risk populations.