Babesiosis Maps

Number* of reported cases of babesiosis, by county of residence — 37 states, 2017†

 

map_2017

* N = 2,324; county of residence was known for all but 34 (1%) of the 2,358 total case-patients.

  • Cases are mapped to the patients’ county of residence, which was not necessarily where they became infected.
  • Surveillance for babesiosis was conducted by 37 states in 2017.
  • Babesiosis was not a reportable disease in the gray states, and health departments in those states did not notify CDC of cases.

† Year as reported by the health department.

Number* of reported cases of babesiosis, by county of residence — 35 states, 2016†

 

map_2016

* N = 1,889; county of residence was known for all but 20 (1%) of the 1,909 total case-patients.

  • Cases are mapped to the patients’ county of residence, which was not necessarily where they became infected.
  • Surveillance for babesiosis was conducted by 35 states in 2016.
  • Babesiosis was not a reportable disease in the gray states, and health departments in those states did not notify CDC of cases.

† Year as reported by the health department.

Number* of reported cases of babesiosis, by county of residence — 33 states, 2015†

 

map_2015

* N = 2,070; county of residence was known for all but 4 (<1%) of the 2,074 total case-patients.

  • Cases are mapped to the patients’ county of residence, which was not necessarily where they became infected.
  • Surveillance for babesiosis was conducted by 33 states in 2015.
  • Babesiosis was not a reportable disease in the gray states, and health departments in those states did not notify CDC of cases.

† Year as reported by the health department.

Number* of reported cases of babesiosis, by county of residence — 31 states, 2014†

 

* N = 1,731; county of residence was known for all but 13 (1%) of the 1,744 total case-patients.

  • Cases are mapped to the patients’ county of residence, which was not necessarily where they became infected.
  • Surveillance for babesiosis was conducted by 31 states in 2014.
  • Babesiosis was not a reportable disease in the gray states, and health departments in those states did not notify CDC of cases.

† Year as reported by the health department.

Number* of reported cases of babesiosis, by county of residence — 27 states, 2013†

* N = 1,749; county of residence was known for all but 12 (1%) of the 1,761 total case-patients.

  • Cases are mapped to the patients’ county of residence, which was not necessarily where they became infected.
  • Surveillance for babesiosis was conducted by 27 states in 2013.
  • Babesiosis was not a reportable disease in the gray states, and health departments in those states did not notify CDC of cases.

† Year as reported by the health department.

Number* of reported cases of babesiosis, by county of residence — 22 states, 2012†

 

* N = 904; county of residence was known for all but 7 (1%) of the 911 total case-patients.

  • Cases are mapped to the patients’ county of residence, which was not necessarily where they became infected.
  • Surveillance for babesiosis was conducted by 22 states in 2012.
  • Babesiosis was not a reportable disease in the gray states, and health departments in those states did not notify CDC of cases.

† Year as reported by the health department.

Number* of reported cases of babesiosis, by county of residence — 22 states, 2011†

* N = 1,117; county of residence was known for all but 9 (1%) of the 1,126 total case-patients.

    • Cases are mapped to the patients’ county of residence, which was not necessarily where they became infected.
    • Surveillance for babesiosis was conducted by 22 states in 2011.
    • Babesiosis was not a reportable disease in the gray states, and health departments in those states did not notify CDC of cases.

† Year as reported by the health department.

Page last reviewed: October 25, 2019