Wisconsin reports its first measles death since 1990: an infant, amid 431 cases this year

Wisconsin has recorded its first measles death since 1990. In a release on November 5, the state Department of Health Services (DHS) said an infant associated with the ongoing outbreak in southwestern Wisconsin has died, and that the coroner listed measles as the immediate cause. DHS said it will not release further details about the child or family, to protect their privacy.

The numbers DHS reported

DHS describes 431 as the most measles cases in the state in more than 35 years, and cautions that actual spread may be higher because not everyone who gets sick is tested or reported. FOX6 reports the same figures and notes that DHS did not name the specific counties in its summary of the outbreak area.

DHS Secretary Kirsten Johnson said in the release, "Any death of a child is a tragedy," and urged residents to evaluate their risk and protect their families.

The national picture

NBC News reports that Wisconsin's is the third U.S. measles death reported this week. Pennsylvania announced on Wednesday the death of an unvaccinated Jefferson County resident, its sixth this year, and New York reported a child's death in Lewis County on Monday. We covered that one in New York reports its first measles death in over 30 years.

By NBC's tally of state data, eight measles-associated deaths have been reported nationwide this year, the highest toll since 1991, and none of the eight people were vaccinated. NBC notes that some were too young or medically ineligible. ABC News also counts Wisconsin's as the eighth. The CDC's own page, updated October 30, listed four deaths, marked as subject to change, which predates this week's reports. The CDC reported 4,852 confirmed cases nationally as of October 29, about 96% of them (4,666) tied to outbreaks, with 43 new outbreaks in 2026. NBC describes that as more than double last year's total and the most since 1991.

Why the vaccination gap matters

NBC reports that about 85% of Wisconsin kindergartners are vaccinated, compared with a 92% national average and the 95% level experts cite for community protection. That is one reporter's summary of existing figures; we have not independently pulled the state school-vaccination dataset, so treat the chart above as NBC's numbers.

DHS says two doses of MMR vaccine are about 97% effective at preventing measles. NBC reports the department recommends early doses for infants as young as 6 months who are at increased risk, with about 500 such doses given since August. Residents can check their records through the Wisconsin Immunization Registry, a health care provider or a local health department.

What officials say to do

This is the guidance DHS published, not our advice:

• Check your vaccination status.
• Anyone exposed to measles should stay home.
• People with a fever and rash, especially if exposed or unvaccinated, should contact their health care provider and call ahead before visiting a clinic or hospital.

DHS says measles can cause pneumonia and brain swelling, and that children under 5, pregnant people and people with weakened immune systems face higher risk of complications. Symptoms typically appear 10 to 21 days after exposure, according to FOX6's summary of DHS guidance.

What to watch

NBC reports that the Pan American Health Organization is due to meet next week to decide whether the United States should lose its measles elimination status. Pennsylvania's outbreak, which began in April, is the country's largest at nearly 1,500 cases across 45 counties, per NBC. DHS updates its outbreak counts on its measles page; the next figures will show whether Wisconsin's outbreak is still growing. We will update this story if DHS releases more.

Sources: Wisconsin DHS release, Nov. 5, 2026; CDC measles cases and outbreaks, updated Oct. 30, 2026; NBC News; FOX6 Milwaukee; ABC News. This is news reporting, not medical advice.