Wisconsin Reports First Measles Death in 35 Years

An infant in Wisconsin has died of measles, state officials reported Thursday, marking Wisconsin’s first death from the disease since 1990. The death occurred amid an outbreak in the state that has sickened more than 430 people across 13 counties this year, according to Ars Technica.

“Any death of a child is a tragedy, and even more so when it is related to a vaccine-preventable disease,” Wisconsin Health Secretary Kirsten Johnson said in a statement, urging residents to evaluate their risk and take protective steps.

The baby’s death was the third measles fatality reported nationally in a single week. A child’s death in New York was reported Monday, and Pennsylvania reported the death of an unvaccinated person in Jefferson County on Wednesday; the Pennsylvania health department did not release further details, including the person’s age. In all, nine measles deaths have been reported in the U.S. this year, eight of them confirmed by state officials. Pennsylvania accounts for seven of the reported deaths, including two babies, a healthy teenager and several adults with underlying health conditions. The deaths come days before the U.S. and Mexico meet with the Pan American Health Organization for a three-day review that could formally strip the United States of its measles elimination status, The Hill reported.

The context

Measles elimination means a disease no longer spreads continuously within a country’s borders. Losing the designation would be a formal acknowledgment that measles is spreading in the United States again.

As of November 5, the Centers for Disease Control and Prevention counted 5,182 measles cases this year across 47 states and jurisdictions. The national case and death tallies are the highest recorded since 1991. The CDC is reporting four measles deaths, though it is unclear which of the state-reported deaths the agency has counted. Pennsylvania’s ongoing outbreak has produced 1,467 cases this year, and health officials caution that reported figures likely understate the true spread. As Wisconsin officials noted, not everyone who becomes ill seeks care or gets tested, so cases may go unreported — a particular concern because large outbreaks, including Pennsylvania’s, have hit tight-knit religious communities less likely to seek conventional medical care.

Why it matters

A preventable infant death, combined with the highest national case counts in more than three decades, points to sustained measles transmission in the United States. The PAHO review could make that official: losing elimination status would formally recognize that measles circulates within U.S. borders again. The outcome carries weight for public health agencies and for families nationwide, since measles is vaccine-preventable and the deaths this year have included unvaccinated people, infants too young for full protection, and adults with underlying conditions.

What’s next

The U.S. and Mexico will meet with the Pan American Health Organization for a three-day review in the coming days. That review could formally end the U.S. measles elimination status, though the outcome is not yet decided. Open questions include how many of the nine reported deaths the CDC will ultimately count and whether case totals — likely an undercount, per Wisconsin officials — continue to climb through year’s end.