Areas of the United States that have a high incidence of Lyme disease include the Northeast, the Pacific Coast and the mid-Atlantic and North-Central states. Be especially careful during warm weather months when ticks are most active.
Here's what you need to know about Rocky Mountain spotted fever, which is widespread in the U.S.
Information about laboratory tests that help support a diagnosis of Lyme disease
Information about ticks...did you know there are more than 800 different species and some transmit disease?