Babesiosis Statistics - Minnesota Dept. of Health

Babesiosis Statistics

In 2016, 50 confirmed and probable babesiosis cases (0.9 per 100,000 population) were reported, up from the 45 cases in 2015. Despite slight annual fluctuations, case totals since 2005 (range, 10 to 72) have been consistently higher than reported totals from 1996 to 2004 (range, 0 to 9). In 2016, 28 (56%) of the cases occurred in males. The median case age was 61 years (range, 3 to 88 years), down from 64 in 2015, and older than the median ages for both anaplasmosis (59 years) and Lyme disease (49 years). Onsets of illness peaked in the summer months; 38 (76%) of 50 patients with known onset reported first experiencing symptoms in June, July, or August. Fifteen (30%) cases were hospitalized for their infection in 2016 for a median duration of 5 days (range, 2 to 13 days). Although severe complications like organ failure were reported in 6 cases, there were no deaths attributable to babesiosis in 2016.

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 Thursday, 11-Jan-2018 13:00:58 CST