Measles has surged to historic levels in the United States, with 2026 already surpassing last year’s record tally.
Data show more cases have been logged in the past 18 months than in the previous quarter‑century combined, underscoring what pediatric leaders call a preventable public health failure.
The Centers for Disease Control and Prevention (CDC) reports dozens of new infections each week, with outbreaks that began in 2025 continuing into this year and fresh clusters emerging across most regions.
Nearly all cases involve unvaccinated children. “This essentially is a public health failure, and it’s avoidable,” said Andrew Racine, president of the American Academy of Pediatrics.
South Carolina has borne the brunt, recording the largest outbreak in decades. Beginning in Spartanburg County last October, the wave swelled to nearly 1,000 cases before subsiding in April.
Local leaders recall the scramble to trace exposures after a Christmas brunch at a Unitarian Universalist church was linked to the spread. Congregants ultimately avoided wider transmission thanks to high vaccination coverage, but the episode highlighted how quickly measles can infiltrate communities.
Nationwide, last year’s total of 2,300 cases was already the worst since 1991. This year’s count has climbed past 2,318 with five months still to go. While no deaths have been reported in 2026, the CDC notes that measles can cause severe complications: one in five unvaccinated patients requires hospitalization, and one in 20 develops pneumonia.
Utah has tracked 711 cases over the past year, including 514 in 2026. State data show about 8% of patients have been hospitalized, nearly all unvaccinated.
Most required intravenous fluids or oxygen, and nearly a third developed pneumonia. South Carolina’s outbreak produced similar findings, with two cases of measles encephalitis but no fatalities.
Officials warn that lagging vaccination rates continue to fuel the resurgence. Prime Minister Pedro Sánchez’s words about Spain’s fires could just as easily apply here: Americans are “living through a dramatic situation.”
Public health leaders say the lesson is clear — vaccination remains the strongest defense against one of the most contagious viruses known to humans.
