In March 2026, it will be a year since measles have been circulating continuously in the United States, beginning with an outbreak in Texas that lasted from January to August 2025. Even before that outbreak was declared over, a new outbreak started in August along the border between Utah and Arizona, which is still ongoing. Following this, another outbreak began in South Carolina in September, which sharply increased in January 2026 and continues to persist. The severity of these outbreaks highlights the rising threat of measles in the U.S., as health officials have already confirmed 1,300 infection cases this year by March 6, suggesting that the country is likely to exceed the total number of cases from 2025, which marked the highest numbers in 35 years.

Researchers at Brown University's Pandemic Center are currently studying the preparedness and response to such outbreaks and have warned that the resurgence of measles is a grim indicator of what lies ahead if vaccination rates do not improve. They have emphasized that due to the low levels of vaccination across the country, measles outbreaks will continue, resulting in unnecessary hospitalizations for unvaccinated individuals. The situation poses a serious public health risk, not only undermining the 'safe country' status of the United States but also raising concerns about the broader implications for herd immunity and community health.