DHS Logo Original 07/11/2018

News Release

For Immediate Release

June 10, 2026
Contact: [email protected], 608-266-1683

 

DHS Monitoring Continues to Show High Levels of Tick Activity Statewide
Encourages Wisconsinites to understand tick activity, report ticks, and prevent against disease

With tick activity reaching its peak for the season, the Wisconsin Department of Health Services (DHS) continues to closely monitor tick activity, with the most recent surveillance data showing nymphal deer (blacklegged) ticks are currently driving the trend. Nymphal deer ticks are young (not yet adult) ticks known for being very small—about the size of a poppyseed—and for spreading more human tickborne infections than adult deer ticks, including Lyme disease and other illnesses.

"Nymphal ticks are harder to spot due to their small size, making them more likely to go unnoticed, and remain attached for longer, so they have a higher potential to transmit disease," said Vectorborne Disease Epidemiologist Rebecca Osborn. "Fortunately, there are many ways to prevent tick bites, including using insect repellent, wearing clothes and gear that have been treated with permethrin, and doing daily tick checks when you are outdoors."

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