The Wisconsin Department of Health Services said Thursday that an infant died from measles, marking the state’s first measles-related death since 1990.
The CDC has indicated that its national death tally may be revised once the agency completes work on a standardized definition for measles-related fatalities.
Outbreak spreads across the southwest
Health officials said the baby was among dozens of cases reported in the state’s southwestern region. The coroner listed measles as the immediate cause of death.
Public health experts note that when vaccination coverage falls below the 95% herd-immunity threshold, the virus can move rapidly through susceptible populations.
As of Nov. 3, the department has logged 431 confirmed measles cases in 13 counties for 2026. That figure is the highest the state has recorded in more than three decades.
Only three of those patients had received at least one dose of the measles, mumps and rubella (MMR) vaccine. Nine people required hospital care, according to the agency.
Nearly $2.4 million of the additional $100 million funding for measles and other vaccine-preventable diseases has been directed to New York State, with $2.1 million earmarked for New York City.
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Kirsten Johnson, secretary of the Wisconsin Department of Health Services, called the loss “a tragedy” and urged residents to assess their vaccination status.
National picture shows rising toll
Across the United States, the Centers for Disease Control and Prevention reported 4,852 measles cases as of Oct. 29, more than double the 2,289 cases recorded in 2025. Hospitalizations have climbed to 511, up from 244 the previous year.
The nation is now edging toward 5,000 confirmed cases, showing the scale of the current outbreak.
The vaccine-preventable disease was declared eliminated in the United States in 2000, meaning endemic transmission had been halted, but recent declines in childhood vaccination rates have pushed many states below the 95% coverage needed for herd immunity.
Three deaths have been confirmed nationally, though Pennsylvania officials say five measles-related deaths have occurred in their state. The CDC said its death count may change after it completes work to develop a new standardized case definition for “deaths due to measles.”
New York announced its first measles death in 30 years, a child from Lewis County, bringing the state’s total to 210 cases. Governor Kathy Hochul emphasized that vaccination remains the strongest protection.
Federal assistance expands
The Department of Health and Human Services announced deployment of epidemiologists to support New York’s outbreak response.
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Teams will stay through mid-November, concentrating on surveillance, data analysis, and strategic planning for containment.
Pennsylvania’s death tally and reporting dispute
Pennsylvania health authorities reported a sixth measles-related death, bringing the state’s fatality count to six.
The United States has now passed 4,000 cases, and Pennsylvania’s sixth death adds to the ongoing discrepancy between state reports and the CDC’s national tally.
Federal data still list a lower national death total, creating a mismatch with the state report.
The difference has fueled a public dispute between the Health and Human Services secretary and the state governor.
Secretary Robert F. Kennedy Jr. accused the governor of withholding information needed for CDC verification.
