Overview of Tickborne Diseases

Contents
Related Pages

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.

US map showing where cases of Anaplasmosis have been reported. Cases are concentrated in the Northeastern corner of the U.S.
ANAPLASMOSIS
US map showing where cases of Babesiosis have been reported. Cases are concentrated in the Northeastern corner of the U.S.
BABESIOSIS

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.

US map showing where cases of Ehrlichiosis have been reported. Cases are concentrated in the Eastern half of the U.S.
EHRLICHIOSIS
US map showing where Lyme disease cases have been reported. Cases are concentrated in the Northeastern corner of the U.S.
LYME DISEASE
US map showing where Spotted Fever Rickettsiosis cases have been reported. Cases concentrated in the Eastern half of the US
SPOTTED FEVER RICKETTSIOSIS (INCLUDING ROCKY MOUNTAIN SPOTTED FEVER)
US map showing where cases of Tularemia have been reported. Cases are concentrated in the middle part of the U.S.
TULAREMIA

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.

Top of Page
Page last reviewed: August 5, 2022
Content source: Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Vector-Borne Diseases (DVBD)