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Several Northern California counties have kindergarten MMR vaccination rates below the 95% needed for community immunity.

Measles cases in 2025 have surged to their highest levels since the early 1990s, with most cases occurring in unvaccinated individuals.

Experts attribute the drop in vaccinations to growing skepticism, which has intensified since the COVID-19 pandemic.

Measles vaccination rates among young children in Shasta and several other North State counties is at least slightly below the percentage needed to support widespread immunity, according to new county-level data compiled from state health agencies.

That same data shows Measles, Mumps, and Rubella (MMR) vaccination coverage is eroding across the United States while at the same time measles cases ar

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