US EditionTiny Invasive Tick that Spreads Disease Found in Michigan for First Time
- Michigan detected its first Asian longhorned ticks when two nymphs were found at Grand Mere State Park, Berrien County, confirmed on June 11, 2025.
- The invasive tick, native to east Asia and first found in New Jersey in 2017, has spread to 21 states including Indiana and Ohio, with surveillance ongoing to track its distribution in Michigan.
- Calvin University students discovered the ticks during routine surveillance and worked with Michigan State University and state agencies to identify the species and assess potential risks to livestock and wildlife.
- State Veterinarian Nora Wineland stated this invasive species poses a disease risk to mammals and birds, especially cattle, and emphasized collaboration and increased educational outreach to protect animal and public health.
- MDARD will continue One Health efforts with partners to conduct statewide surveillance, urging preventive measures like tick checks, habitat management, and veterinary consultation to safeguard animals and humans.
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Invasive tick species found in Berrien County
GRAND RAPIDS, Mich. (WOOD) — The first Asian longhorned ticks in the state have been found in Berrien County. Calvin University researchers found the two ticks during routine surveillance at Grand Mere State Park, according to the Michigan Department of Agriculture and Rural Development. "Calvin research students have been studying the ecology and distribution of ticks in West Michigan since 2020," said William Miller, assistant professor of bio…
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