
Napa County records Bay Area's first measles case since 2012 amid regional outbreaks
Napa County has confirmed a measles case—the county's first since 2012—in a child who was not vaccinated and had traveled to South Carolina, which is dealing with a large outbreak; CA CDPH is coordinating follow-up and vaccination outreach, while officials say there is no current public health threat to the general population in Napa. Separately, Santa Clara County detected measles in wastewater from Palo Alto’s sewershed, but officials cautioned the source is unknown and follow-up testing found no further evidence in the water; national measles cases rose to record levels in 2025, underscoring the importance of the two-dose MMR vaccine for lifelong immunity.





