Measles Cases Rise: What You Need to Know | [City Name] Health Alert

The United States is experiencing a resurgence of measles, with 2025 marking the worst year for the disease in over three decades. More than 1,400 confirmed cases have been recorded across 43 states and that trend is continuing into 2026, with over 700 cases already reported this year. This increase underscores the continued threat posed by measles, despite the virus being declared eliminated in the U.S. In 2000.

Wisconsin Measles Outbreak

Wisconsin is currently grappling with a measles outbreak centered in Oconto County. The first cases were reported on August 2, 2025, with nine individuals testing positive for the virus, all linked to exposure during out-of-state travel. As of recently, the outbreak has grown to include 23 confirmed cases, leading to hospitalizations and heightened concern among public health officials.

The Oconto County Public Health department has initiated contact tracing to identify and notify individuals who may have been exposed. A team of three nurses, supported by the county’s health officer, is working to monitor the situation in daily consultation with state health officials. Vaccination clinics, including walk-in appointments at the county health department, have been established to increase vaccination coverage, which experts emphasize is the most effective defense against measles.

Why Measles Remains a Serious Threat

Measles is exceptionally contagious. The virus can remain infectious in the air for up to two hours after an infected person coughs or sneezes. This means that if one person contracts measles, 90% of nearby unvaccinated individuals are likely to become infected. This high rate of transmission makes outbreaks particularly challenging to control.

The recent increase in cases is linked to declining childhood vaccination rates, leaving communities more vulnerable to the disease. In April 2025, there were already 884 reported cases and three deaths in the U.S., primarily tied to an outbreak in West Texas among unvaccinated individuals. The CDC recorded 49 measles outbreaks in 2025, a significant increase from the 16 outbreaks recorded in 2024.

Recent Cases and International Travel

On January 28, 2026, the Wisconsin Department of Health Services confirmed an additional case of measles, linked to international travel. While the current risk to the public is considered low, health officials are using this as an opportunity to remind individuals to check their vaccination status.

A significant outbreak is currently occurring in South Carolina, with over 500 people quarantined and hundreds infected as of January 27, 2026.

The Importance of Vaccination

Vaccination remains the cornerstone of measles prevention. The measles, mumps, and rubella (MMR) vaccine is highly effective, providing two doses offering robust protection against the virus. The CDC recommends that all children receive two doses of the MMR vaccine, with the first dose administered between 12 and 15 months of age and the second dose between 4 and 6 years of age.

Health officials emphasize that maintaining high vaccination rates is crucial to preventing the re-establishment of measles as a common disease in the United States. The current outbreaks serve as a stark reminder of the importance of vaccination not only for individual protection but also for community health.

Looking Ahead

The ongoing measles outbreaks across the country, including the situation in Wisconsin, highlight the need for continued vigilance and proactive public health measures. Increased vaccination efforts, coupled with robust surveillance and rapid response to outbreaks, are essential to protect communities from this highly contagious and potentially serious disease. Individuals are encouraged to check their vaccination records and consult with their healthcare providers to ensure they are adequately protected against measles.