Wisconsin Ticks: Help Research Lyme Disease & Other Illnesses | Marshfield Clinic Study

Marshfield Clinic Research Institute is seeking Wisconsin residents to participate in its third year of the Tick Inventory via Citizen Science (TICS) project, a statewide effort to map tick populations and the diseases they carry.

The initiative, launched in 2024, invites individuals to submit ticks encountered while spending time outdoors. Researchers aim to assess the risks associated with tick-borne illnesses and better understand exposure patterns across the state. In both 2024 and 2025, the project received over 6,000 tick submissions, representing nearly every county in Wisconsin, according to the Clinic.

While the American dog tick remains the most commonly submitted species, researchers noted a significant increase in the number of deer ticks collected in 2025. Alexandra Linz, an associate research scientist with the Institute, emphasized the importance of careful tick checks following outdoor activities, particularly due to the small size of deer ticks and their higher likelihood of transmitting diseases like Lyme disease and anaplasmosis.

The TICS project has likewise identified the presence of the lone star tick in Wisconsin, a species typically found in warmer climates. This tick can spread ehrlichiosis and trigger Alpha-gal Syndrome, a rare allergy to red meat.

This year, the Institute is expanding the project with the launch of TICS-LENS, a new study focused on gathering firsthand accounts from individuals who have experienced Lyme disease or other tick-borne infections. “Our new study is aimed at engaging individuals who have experienced Lyme or another tick-infection to share their story,” said Dr. Jennifer Meece, executive director of the Marshfield Clinic Research Institute.

Symptoms of tick-borne illnesses can include rash, fever, and joint pain. The Institute advises residents to utilize insect repellents and diligently check for ticks after spending time in wooded or brushy areas.

Residents interested in participating or requesting a tick collection kit can contact the Institute at [email protected] or 1-715-389-7796.