National Pesticide Information Center



Lyme Disease

Lyme disease is a bacterial infection that ticks transmit to people and animals. Lyme disease has been reported throughout the United States, although the majority of cases have been reported in the northeast, the north central states and along the west coast. Lyme disease is now the most commonly reported vector-borne illness in the United States.

Things to know:

  • Lyme disease is spread by black-legged ticks (deer ticks), which are smaller than dog ticks.
  • The signs and symptoms of Lyme disease can take weeks, months or years to develop.
  • Often within one to two weeks, infected persons will have a rash shaped like a bulls-eye, muscle or joint pain, or flu-like symptoms.
  • People with Lyme disease have reported signs and symptoms that are often similar to other diseases.
  • If you suspect you may have Lyme disease, consider talking to your doctor.
  • Preventing bites from ticks is the best way to avoid getting Lyme disease. If you are going to be in areas where ticks are present, consider using a tick repellent.

Additional Resources:

See the NPIC Collection of materials on Managing Ticks and Preventing Tick Bites

If you have questions about this, or any pesticide-related topic, please call NPIC at 1-800-858-7378 (8:00am - 12:00pm PST), or email at npic@ace.orst.edu.

Last updated July 15, 2016