Summary
In 2025, there was a large increase in measles cases in the U.S. because fewer people were getting vaccinated. This happened after vaccination rates fell during the pandemic.
Key Facts
- Measles is very contagious and was eliminated in the U.S. over 25 years ago.
- Measles cases have risen sharply in the U.S. in 2025.
- The increase in cases is linked to a drop in vaccination rates.
- The decline in vaccinations became more noticeable during the pandemic.
- Caitlin Rivers, an expert from Johns Hopkins University, discussed the impact and reasons for the outbreak.
