Measles

Outbreak driven by falling vaccination and misinformation as federal public health cuts hamper state responseThe US has recorded more than 2,000 confirmed measles cases so far this year – near the total of 2,228 recorded in all of 2025, and on track to become the worst year for measles in decades as states struggle with the loss of federal funding for public health.The virus continues to spread in unvaccinated and under-vaccinated communities, including among babies too young to be vaccinated, and it reveals the depths of the twin crises of misinformation and public health in the US. Continue reading...

• The CDC confirmed 51 additional measles cases, bringing the nationwide U.S. outbreak to 1,893 infections as of May 16, 2026. • The agency said all but nine cases were locally acquired, 27 outbreaks have been reported this year, and 92% of patients were unvaccinated or had unknown vaccination status. • The outbreak is significant because measles spreads quickly in under-vaccinated communities, and the U.S. is now on pace to exceed last year’s 2,288 cases if transmission continues.

• A growing measles outbreak in South Carolina, reported in recent days, has seen case numbers rise amid low vaccination rates in certain communities. • Public health officials note multiple exposures and urge unvaccinated individuals to seek MMR shots immediately. • The outbreak underscores U.S. vulnerabilities with national MMR coverage at 92.7%, below herd immunity thresholds, risking wider spread.

• Maricopa County Department of Public Health confirmed one new measles case in a county resident, adding to the total number of confirmed cases. • Public health officials have identified specific public exposures linked to this new case. • This development underscores ongoing measles transmission risks in the region amid national outbreak concerns.

• As of April 30, 2026, the US reported 1,814 confirmed measles cases, including 12 among international visitors, per CDC data updated May 1. • 93% of cases (1,688) are outbreak-associated, with 25 new outbreaks in 2026 following 24 earlier ones. • This surge underscores ongoing vaccination gaps, contributing to public health challenges amid 2,288 cases in 2025.

• 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.

• Public health officials confirmed two cases of measles in Sacramento County, California, amid ongoing monitoring for potential spread. • The cases highlight persistent risks despite national vaccination efforts, with officials urging unvaccinated residents to seek immunization. • Measles outbreaks underscore gaps in herd immunity, particularly in localized communities, prompting heightened surveillance statewide.

Health secretary says ‘I had nothing to do with the measles outbreak’ and claims to support measles and MMR vaccinesHealth secretary Robert F Kennedy Jr faced intense questioning from several US senators on Wednesday during a hearing largely focused on how the administration has responded to the measles outbreak and the spread of vaccine misinformation.In his opening remarks to the Senate finance committee, the senator Ron Wyden criticized Kennedy’s messaging on vaccines, saying: “When it comes to vaccines, Robert Kennedy has used this once-in-a-lifetime platform to make parents doubt themselves and doubt their doctors,” before adding: “The secretary has ducked, bobbed and weaved without taking the responsibility of saying what needs to be said: vaccines save lives in America.” Continue reading...

Bottlenecks in the system and parent’s suspicions mean doctors expect another serious outbreak soonBy 10am on a spring day, the corridor of the clinic in the Transylvanian town of Săcele was already crowded with parents and children. They were all waiting to see Dr Mirela Csabai, one of just seven general practitioners serving a population of more than 30,000.Most of the cases that morning were routine: colds, checkups, chronic conditions. The calm, however, is recent. In 2024, a measles epidemic tore through this community and left one unvaccinated toddler dead. Continue reading...

• California has recorded at least 40 measles cases so far in 2026, surpassing the 25 cases of all 2025 and the highest annual total since 73 in 2019. • San Francisco confirmed its first measles case in 7 years in an unvaccinated infant under 1 year old, infected during international travel and recovering at home. • Outbreaks linked to unvaccinated travelers from South Carolina's 1,000-case surge and other states, with exposures at Sacramento preschools, San Bernardino, San Diego ER, and Bay Area sites.

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...

• The US measles case count increased by 43 cases last week to 1,714 total, according to the CDC's weekly update released April 10, 2026. • More than half of the new cases occurred in Utah, marking a smaller jump compared to the prior week's 96-case increase. • This ongoing outbreak highlights gaps in vaccination coverage amid public health concerns over declining immunization rates.

• The CDC reported 43 new measles cases in the US for the week ending April 10, 2026, bringing the national total to 1,714 cases. • More than half of the new cases occurred in Utah, which saw 73 infections last week alone after 142 cases in the past three weeks versus 197 for all of 2025. • The slower increase compared to the prior week's 96 cases highlights ongoing outbreaks concentrated in specific states amid declining vaccination rates.

• 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.

UN assists in emergency vaccination drive as country battles worst surge in cases in years amid fall in vaccination ratesBangladesh is battling its worse measles outbreak in years, with more than 100 children dead amid a rise in unvaccinated infants.The government, in partnership with the United Nations, has begun conducting an emergency measles-rubella vaccination drive for children across the country, after more than 900 cases were confirmed since March. Continue reading...

• 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.

• US measles cases climbed to 1,671 as of April 6, 2026, with 96 new infections reported in the past week, the vast majority in Utah according to the CDC weekly update. • All but 10 cases are linked to 32 states and New York City, with 94% associated with 17 outbreaks including one new outbreak of three or more related cases. • The number of affected states increased by one this week, highlighting ongoing transmission risks amid declining vaccination rates.

• 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.

• 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 CDC posted its first large set of genetic data from 1,000 measles viruses circulating in the US last year, with more data expected soon to assess if elimination status has been lost. • In 2025, measles cases reached 2,285 across 44 states—the worst in over 30 years—while 2026 has seen 1,575 cases by late March amid declining vaccination rates. • Delays in data release stemmed from mass layoffs and resignations; researchers criticize the Trump administration's budget cuts and slow outbreak response.

• Florida reported 143 measles cases as of March 21, 2026, with 73% concentrated in Collier County, marking a decline from 139 cases the previous week. • The state has dropped to the fourth-highest number of measles cases nationally as the spread slows, indicating a shift in outbreak trajectory. • The majority of cases remain geographically concentrated, with nearly three-quarters of infections occurring in a single county, suggesting localized transmission patterns.

• Jerome Adams, former Surgeon General, discussed on CBS's Face the Nation a surge of more than 1,500 confirmed measles cases in the U.S. since January 2026, per CDC data. • A notable spike is occurring in Utah, contributing to the national increase in this highly contagious disease. • The outbreak highlights ongoing vaccination challenges and public health risks in under-immunized communities.

• A measles outbreak in Washtenaw County, southeast Michigan, now includes 7 cases under investigation involving unvaccinated children and adults, with potential exposure at Trinity Health Ann Arbor Hospital's ER on March 21. • The latest case concerns a young child treated in Ypsilanti, raising concerns that ER visitors may have been exposed to the highly contagious virus. • All confirmed and suspected cases are among unvaccinated individuals, highlighting ongoing vaccination gaps amid the outbreak's growth reported on March 25.

• State officials are warning that spring break 2026 travel season could facilitate the spread of measles across the United States as travelers move between regions with varying vaccination rates. • Health authorities are concerned about potential measles transmission during the high-travel period, with implications for public health preparedness and disease surveillance. • The warning underscores ongoing challenges in maintaining herd immunity and controlling vaccine-preventable diseases during major travel seasons.

• Gov. Ron DeSantis' proposal to alter Florida's vaccine requirements for school children failed during the 2026 legislative session. • DeSantis promises continued efforts to pass these policies despite the setback and ongoing measles cases rising across the state. • The resolve strengthens public health debates on vaccination mandates amid disease outbreaks in Florida.

• As of March 6, 2026, the United States has confirmed 1,300 measles infections this year across 30 states, putting the country on track to surpass 2025's record 35-year high numbers. • Measles has continuously circulated in the U.S. for over a year following an outbreak in Texas (January-August 2025), with ongoing outbreaks on the Utah-Arizona border and in South Carolina that drastically increased in January 2026. • The Pan American Health Organization postponed its decision from April to November 2026 on whether the U.S. should lose its measles elimination status achieved in 2000, but current trends suggest it likely will due to vaccination rates falling below the critical 95% threshold.

The Centers for Disease Control and Prevention reported 1,362 confirmed measles cases nationwide in 2026, with 94% linked to ongoing outbreaks. South Carolina's outbreak, which began in October 2025, has decelerated to approximately 10 cases per week after peaking at 200 weekly cases in mid-January, bringing the state total to 996 cases as of March 13. Utah's outbreak, originating in June 2025, has accelerated to 405 cases as of March 10, representing a 47-case increase in one week. Both states currently host the largest active measles outbreaks in the United States.