High-risk areas for Lyme disease

From an article in the StarTribune about a study based on actual collection of ticks:

The map, which pinpoints areas of the eastern United States where people have the highest risk of contracting Lyme disease, is part of a study published in the February issue of the American Journal of Tropical Medicine and Hygiene...

Previous risk maps were heavily reliant on reports of human infections, but those can be misleading because the disease is both over- and under-diagnosed, according to the study. Where someone is diagnosed is not necessarily where the disease was contracted, and ticks may live in a region long before they actually infect someone, meaning there could be a significant risk even without confirmed cases...

About 1 in 5 ticks collected were infected — more than researchers expected — and that percentage was fairly constant across geographic areas, she said. Researchers had expected the infection rate to vary.

Pants legs tucked into my socks virtually every time I hike.