Measles Outbreak

• South Carolina health officials ended the nation's largest measles outbreak after six months, with 997 infections and 21 hospitalizations but no deaths. • The outbreak concluded Sunday following over a month without new cases. • This marks a significant public health milestone amid rising national vaccination concerns.

• The largest measles outbreak in the United States in more than 35 years has ended, with no new cases reported in more than 42 days, according to the South Carolina Department of Public Health. • The outbreak began in October 2025 in South Carolina and resulted in nearly 1,000 confirmed cases over six months, with more than 600 cases occurring in 2026 alone; at least 21 hospitalizations were recorded with no reported deaths. • Canada has been significantly impacted, losing its measles elimination status on November 10, 2025, and reporting 907 cases since the start of 2026, with Manitoba accounting for 556 cases.

Data shows 85% of those infected in the state have been not vaccinated against measles as dozens are hospitalizedMeasles: how does it spread and how can I protect my child?Utah has emerged as a major center of measles infections in the US, as an outbreak that has been building for some time continues to expand.State officials reported a total of 602 measles cases on Wednesday tied to an outbreak that started last year and is still ongoing, including 19 newly identified infections, according to the Center for Infectious Disease Research and Policy (CIDRAP). Recent exposures have been reported at several preschools and elementary schools. Continue reading...

• Texas health officials reported 156 measles cases as of April 7, 2026, in a Dallas County outbreak starting March 15, with 12 hospitalizations. • 89% of cases unvaccinated, including 45 children under 5; infection rate 90% among exposed susceptibles. • Declared public health emergency; impacts 2 million residents, straining ERs amid 83% vaccination goal miss.

• Measles cases from Texas federal detention facilities infected at least 4 El Paso residents who worked there, marking a community outbreak. • Infectious disease expert Flor M. stated, 'By definition, when more than 2 measles cases occur in a community where there should be 0 cases, this is an outbreak.' • The incident highlights risks of contagious diseases escaping confined settings into wider US populations amid ongoing vaccination policy debates.

• The US measles outbreak has accelerated in 2026 with cases now reported in more than half of the states, marking a resurgence 20 years after official eradication, driven primarily by declining vaccination rates. • Last year, the US reported over 2,000 measles cases (2,213 confirmed) and three pediatric deaths, with the mortality rate matching historical data of approximately one death per 1,000 infected children. • Oregon has diagnosed 13 measles cases so far in 2026 with hundreds of potential exposures in the past week; health experts note that official case counts likely underestimate true infection rates due to unreported cases and undetected transmission indicated by wastewater data.

• The US measles caseload climbed to 1,671 infections with nearly 100 new cases reported in the past week, according to the CDC's weekly update, with the vast majority occurring in Utah. • Utah recorded 73 new measles cases this week and 142 new cases over the past three weeks, bringing the state's 2026 total to 362 cases compared with 197 for all of 2025. • The outbreak spans 32 states and New York City, with 94% of confirmed cases linked to one of 17 outbreaks; Arizona has 71 total cases, Florida has 129, and Texas has 175 cases.