University of Wisconsin–Madison

Anaplasmosis

Human Anaplasmosis is caused by a strain of Anaplasma phagocytophilum (ha strain) that is transmitted by deer ticks.  Roughly 3-12% of nymphal deer ticks in Wisconsin are infected with this pathogen.  The maps and graphs are from the Wisconsin Department of Health Services.  See their webpage for more information.  https://www.dhs.wisconsin.gov/tickborne/ae/2008-currentdatamap-anaplasmosis.htm