Map of Measles Cases Spiking as Trump Admin Overhauls Vaccine Advice
Summary
The United States is facing its highest number of measles cases in over 30 years, with Wisconsin among the states experiencing new outbreaks. This rise in measles infections coincides with the Trump administration’s changes to childhood vaccine guidelines, which separate the MMR vaccine into three separate shots.Key Facts
- As of August 13, there were 2,566 confirmed measles cases across the U.S. in 47 states and jurisdictions.
- Wisconsin’s measles cases are increasing while vaccination rates for the MMR vaccine have dropped from about 85% in 2019 to under 80% in 2025 among 2-year-olds.
- The MMR vaccine protects against measles, mumps, and rubella; measles is highly contagious and needs about 95% vaccination coverage to stop outbreaks.
- The Trump administration introduced new vaccine recommendations called the “Gold Standard Childhood Vaccine Recommendations,” which change how and when children get their vaccines.
- Most measles cases this year (93%) were in people who were unvaccinated or had unknown vaccination status.
- Wisconsin counties with vaccination rates below 70% are seeing more measles outbreaks.
- Declines in vaccination rates started before the COVID-19 pandemic and worsened after due to fewer routine doctor visits.
- The CDC reports 94% of this year's measles cases are from 38 different outbreaks, mostly affecting U.S. residents.
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