Anaplasmosis Statistics

In 2021, 603 confirmed or probable cases of anaplasmosis (10.5 cases per 100,000 population) were reported in Minnesota, up from the 407 cases reported in 2019.

• 382 cases (63%) were male.
• Median age of cases was 64 years (range, 1 to 96 years), 19 years older than the median age of confirmed Lyme disease cases.
• 66% of cases reported illness onsets in May, June, or July.
• 173 (29%) cases were hospitalized at some point for their infection with a median duration of 4 days hospitalization (range, 1 to 44 days).

Charts and Graphs

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

Maps

Most anaplasmosis cases report likely exposure to blacklegged ticks in the same east-central and north-central 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

• Anaplasmosis, 2019
  Minnesota Department of Health, Disease Control Newsletter
  • Anaplasmosis, 2018
  • Anaplasmosis, 2017
  • Anaplasmosis, 2016
  • Anaplasmosis, 2015
  • Anaplasmosis, 2014
  • Anaplasmosis, 2013
  • Anaplasmosis, 2012
  • Anaplasmosis, 2011
  • Anaplasmosis, 2010
  • Anaplasmosis, 2009
  • Anaplasmosis, 2008
  • Anaplasmosis, 2007
  • Anaplasmosis, 2006
  • Anaplasmosis, 2005
  • Anaplasmosis, 2004

National Statistics

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