Story perspectives

California's Measles Outbreak Grows to 39 Cases Amid Vaccination Decline

4/15/2026

Summary

Story summary

California's 2026 measles outbreak has 39 cases, mainly under 20, with 17 new cases in Sacramento and Placer counties.
Most cases involve unvaccinated individuals, signaling vaccination-rate decline.
Nationwide, over 2,200 measles cases and 48 outbreaks; South Carolina, Texas, Utah, and Arizona have the highest counts.
The first California case this year involved an unvaccinated toddler who traveled from South Carolina.
California had not seen a measles outbreak since early 2020.

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Story summary

California's 2026 measles outbreak has 39 cases, mainly under 20, with 17 new cases in Sacramento and Placer counties.
Most cases involve unvaccinated individuals, signaling vaccination-rate decline.
Nationwide, over 2,200 measles cases and 48 outbreaks; South Carolina, Texas, Utah, and Arizona have the highest counts.
The first California case this year involved an unvaccinated toddler who traveled from South Carolina.
California had not seen a measles outbreak since early 2020.