Overview of Tickborne Diseases
- Tick ID
- Overview of Tickborne Diseases
- Lyme Disease
- Tickborne Relapsing Fever (TBRF)
- Hard Tick Relapsing Fever
- Rocky Mountain Spotted Fever
- Rickettsia parkeri Rickettsiosis
- Heartland and Bourbon Virus Diseases
- Colorado Tick Fever
- Powassan Virus Disease
- Tickborne Diseases Abroad
- Tick Bites/Prevention
- Lyme Disease Prophylaxis After Tick Bite
Selected Tickborne Diseases Reported to CDC, U.S., 2018
For information about reporting tickborne disease cases or questions about testing, contact your state or local health department.
NOTE: Each dot represents one case. Cases are reported from the infected person’s county of residence (where known), not necessarily the place where they were infected. Maps do not include data if county of residence was not reported.
NOTE: In 2018, no cases of tickborne illness were reported from Hawaii. In 2018, Alaska reported 8 confirmed travel-related cases of Lyme disease.
NOTE: During 2018, babesiosis was reportable in Alabama, Arizona, Arkansas, California, Connecticut, Delaware, District of Columbia, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New York, North Dakota, Ohio, Oregon, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, and Wyoming.
NOTE: Anaplasmosis and ehrlichiosis were not reportable in Colorado, Idaho, New Mexico, Alaska, and Hawaii in 2018.
NOTE: Spotted fever rickettsiosis was not reportable in Alaska and Hawaii in 2018.