Measles cases in the U.S. exceed 750 in early 2026, driven by low vaccination rates and anti-vaccine sentiment.

A worsening measles outbreak in the U.S. has surpassed 750 cases in early 2026, up from 2,000 in 2025, driven by declining vaccination rates, especially among children aged five to 17. Dr. Scott Gottlieb, former FDA commissioner, warned that many states fall below the 95% vaccination threshold needed for herd immunity, with some areas as low as 70%, fueling outbreaks in schools and communities. He linked the decline to anti-vaccine sentiment amplified by pandemic-era mandates and political resistance, noting similar surges in Britain, Canada, and parts of Europe. Concerns are also rising over pertussis, diphtheria, and tetanus due to waning vaccine confidence.