Lyme disease is on the rise in Vermont. Here’s how to protect yourself and still enjoy the outdoors

Lyme disease cases in Vermont have risen significantly, with 2,246 reported in 2025 and the state now having the second-highest rate in the U.S. Patti Casey's team monitors tick populations, finding 51% of tested deer ticks carry Lyme disease. Climate change and increased human-tick interactions, such as suburban development, are contributing factors.