In the US, the number of measles cases has exceeded 1,000, the most since 1992 and the worst epidemic in more than 30 years[1][3][4]. Since the beginning of 2026, at least 1277 cases have been confirmed in almost 40 states, with the epicenter in Texas with over 700 cases[3][4]. In 2025, they recorded more than 2,200 cases and three deaths, including two children, all in unvaccinated persons[2][5]. The majority of those infected, up to 92 percent, are unvaccinated or have an unknown vaccination status[3]. Experts are warning of a tipping point, with vaccination rates in hotspots like Texas at just 82 percent, not enough for herd immunity[1]. The spread is related to a decrease in vaccination rates and mistrust of vaccines[2][3][4]. Secretary of Health Robert F. Kennedy Jr., previously an opponent of vaccination, supported the vaccine[1][3]. Experts estimate that the number of deaths may be underestimated due to under-reporting[4].