“Even in areas where we have really low densities of ticks, the prevalence of Lyme is still hovering right around 50 percent. So even if you’re in an area where ticks aren’t very common, if you do end up with one, our data suggests that you should still be very concerned about Lyme disease.”

http://digital.vpr.net/post/black-legged-ticks-are-now-widespread-vermont-and-half-carry-lyme#stream/0