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San Bernardino County Reports First Measles Case in 2026
Unvaccinated minor from out-of-state visited local Walmart, raising exposure concerns.
Published on Feb. 6, 2026
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Public health officials in San Bernardino County, California have reported the first confirmed case of measles in the county since 2023. The case involves an unvaccinated minor who was visiting from another state and was at a local Walmart Supercenter on January 29, potentially exposing others to the highly contagious virus.
Why it matters
Measles outbreaks remain a public health concern, especially in areas with lower vaccination rates. This case highlights the importance of vaccination and the risks unvaccinated individuals can pose to vulnerable populations, such as infants, the elderly, and those with compromised immune systems.
The details
The unvaccinated minor was at the Walmart Supercenter on Mountain Avenue in Ontario, California on January 29 between noon and 3 p.m. Public health officials warn that those who were at the location during that time and are unvaccinated, immunocompromised, or pregnant may be at risk of developing measles.
- The case was reported by San Bernardino County public health officials on February 7, 2026.
- The unvaccinated minor visited the Walmart Supercenter on January 29, 2026 between noon and 3 p.m.
The players
San Bernardino County Department of Public Health
The local public health agency that reported the first confirmed measles case in the county since 2023.
What’s next
Public health officials are urging anyone who was at the Walmart Supercenter on January 29 between noon and 3 p.m. to monitor for measles symptoms and contact their healthcare provider if they develop a fever, cough, runny nose, or red eyes.
The takeaway
This case serves as a reminder of the importance of vaccination in preventing the spread of highly contagious diseases like measles, especially in densely populated areas. It also highlights the potential risks unvaccinated individuals can pose to vulnerable members of the community.
