Babesiosis Statistics

In 2021, 63 confirmed and probable babesiosis cases (1.1 per 100,000 population) were reported in Minnesota, a slight increase from the 55 cases in 2019.

• 37 (59%) of the cases occurred in males.
• Median case age was 69 years (range, 2 to 92 years), older than the median ages for both anaplasmosis (64 years) and Lyme disease (45 years).
• 80% of patients reported illness onsets in June, July, or August.
• 20 (32%) cases were hospitalized for their infection for a median duration of 6 days hospitalization (range, 2 to 18 days).

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

• Case totals since 2011 (range, 41 to 72) have been consistently higher than reported totals from 2000 to 2010 (range, 1 to 56).

Charts and Graphs

• Reported Cases of Babesiosis in Minnesota by Year, 1996-2021 (PDF)
  Graph showing the number of reported cases of Babesiosis in Minnesota by year.

Maps

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.

• High Risk Areas for Tickborne Diseases in Minnesota
  A map that shows counties of highest tickborne disease risk in Minnesota.

Annual Summary Statistics

• Babesiosis, 2019
  Minnesota Department of Health, Disease Control Newsletter
  • Babesiosis, 2018
  • Babesiosis, 2017
  • Babesiosis, 2016
  • Babesiosis, 2015
  • Babesiosis, 2014
  • Babesiosis, 2013
  • Babesiosis, 2012
  • Babesiosis, 2011
  • Babesiosis, 2010
  • Babesiosis, 2009
  • Babesiosis, 2008
  • Babesiosis, 2007
  • Babesiosis, 2006

National Statistics

• Babesiosis Statistics
  Maps, charts, tables, and reports from the CDC.