Two More Measles Cases Confirmed in Riverside County

Adult and child test positive, raising concerns about disease's contagiousness

Published on Feb. 14, 2026

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Two additional cases of measles have been confirmed in Western Riverside County, according to public health officials. The new cases involve an adult who previously received a measles vaccine and a child who was unvaccinated. Both individuals are recovering at home.

Why it matters

Measles is highly contagious, with up to 90% of unvaccinated people exposed becoming infected. This latest outbreak underscores the importance of vaccination, even for those previously immunized, as immunity can wane over time.

The details

The new cases are linked to the first confirmed measles case in Riverside County this year. Health officials warn that measles can live in the air for up to two hours after an infected person leaves an area, putting unvaccinated individuals at high risk of contracting the disease through exposure.

  • The new cases were confirmed on February 14, 2026.

The players

Riverside University Health System — Public Health (RUHS – PH)

The public health department for Riverside County, California that reported the new measles cases.

Dr. Jennifer Chevinsky

Riverside County Public Health Officer who warned about the highly contagious nature of measles.

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What they’re saying

“These additional cases of measles underscore the disease's highly contagious nature.”

— Dr. Jennifer Chevinsky, Riverside County Public Health Officer (canyonlakeinsider.com)

“Now is the perfect time to make sure you and your family are vaccinated against measles.”

— Dr. Jennifer Chevinsky, Riverside County Public Health Officer (canyonlakeinsider.com)

What’s next

Riverside County Public Health is urging residents to check their vaccination status and get vaccinated if needed. They are also offering upcoming vaccine clinics for those seeking immunization.

The takeaway

This measles outbreak highlights the continued need for vaccination, even among previously immunized individuals, to prevent the spread of this highly contagious disease. Public health officials are stressing the importance of staying up-to-date on vaccinations to protect both individual and community health.