Babesiosis Statistics - Minnesota Dept. of Health

Babesiosis Statistics

In 2017, 59 confirmed and probable babesiosis cases (1.1 per 100,000 population) were reported in Minnesota, up from the 50 cases in 2016.

    • 34 (58%) of the cases occurred in males.
    • Median case age was 64 years (range, 7 to 94 years), older than the median ages for both anaplasmosis (58 years) and Lyme disease (43 years).
    • 87% of patients reported illness onsets in June, July, or August.
    • 19 (32%) cases were hospitalized for their infection for a median duration of 6 days hospitalization (range, 2 to 14 days).

Despite slight annual fluctuations, the overall trend is increasing over the years.

  • Case totals since 2009 (range, 31 to 72) have been consistently higher than reported totals from 2000 to 2008 (range, 1 to 29).

On this page:
Charts and graphs
Annual summaries
National statistics

Charts and Graphs


Most babesiosis cases report likely exposure to blacklegged ticks in the same east-central, north-central, and southeast Minnesota counties where the risk of Lyme disease is greatest.

Annual Summary Statistics

National Statistics

Updated Tuesday, 27-Nov-2018 13:10:02 CST