Ohio, Virginia, Kentucky, Tennessee, and West Virginia are seeing unusually aggressive tick activity this year. As tick season rolls around, residents of tick-prone areas in the U.S. are readying to ...

Lab analyst Diana Wendelin gently adjusts a slide under a microscope. An enlarged image of a tick comes into focus on her computer screen. “So, the first thing I'm looking at is called the scutum.

Health officials urge Michiganders to take precautions to prevent tick bites as the blood-sucking arachnids spread to more heavily populated areas of the state. The number of Lyme disease cases in ...