US Measles Cases Reach 35-Year High in 2026

admin — Sat, 25 Jul 2026 08:24:51 +0000

The United States recorded 2,318 confirmed measles cases in the first seven months of 2026, the highest total in 35 years, according to Centers for Disease Control and Prevention data released Friday. The figure already exceeds the full-year total of 2,289 cases reported in 2025. Most infections involve unvaccinated individuals.

Public health officials link the surge to declining childhood vaccination rates and ongoing outbreaks in several states. The milestone comes with more than five months remaining in the year.

Key Developments
CDC figures show 93 percent of 2026 cases occurred in people who were unvaccinated or whose vaccination status was unknown. The agency reported dozens of new cases weekly, driven by large outbreaks in South Carolina, Utah, Arizona and smaller clusters elsewhere.

Kindergarten MMR coverage fell to 92.5 percent in the most recent school year, below the 95 percent threshold needed for herd immunity. Health departments continue investigating international importations that seed local transmission.

Johns Hopkins University’s measles tracker recorded similar numbers earlier in the week, confirming the record pace. Officials note measles remains one of the most contagious diseases, spreading easily in under-vaccinated communities.

Impact
The rising case count raises the risk that the United States could lose its measles elimination status, achieved in 2000. Elimination requires the absence of continuous transmission for more than 12 months.

Hospitals in affected states report increased pediatric admissions for complications such as pneumonia and encephalitis. Public health costs grow as local agencies expand contact tracing and offer free vaccination clinics.

Experts warn that further declines in immunization could lead to larger outbreaks in coming years. Communities with low vaccine uptake face the greatest exposure.

What Happens Next
CDC and state health departments urge catch-up vaccinations for eligible children and adults. Free MMR clinics continue operating in outbreak areas.

Officials monitor case trends closely through the remainder of 2026. Additional data updates are expected weekly. Public health campaigns aim to reverse coverage declines before the start of the next school year.

Federal and state agencies may expand outreach in high-risk regions if numbers continue climbing.

How many measles cases has the US recorded in 2026?

The CDC reported 2,318 confirmed cases through late July 2026, already higher than the full 2025 total.

Why are measles cases rising in the United States?

Declining childhood vaccination rates, particularly MMR coverage below 95 percent, and international importations fuel ongoing outbreaks.

Which states have seen major outbreaks?

South Carolina, Utah and Arizona reported large outbreaks, with smaller clusters appearing in other states.

Could the US lose its measles elimination status?

Yes. Continuous transmission for more than 12 months could end the elimination status declared in 2000.

What should people do to protect themselves?

Health officials recommend ensuring MMR vaccination is up to date, especially for children and unvaccinated adults.

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US Measles Cases Reach 35-Year High in 2026