In addition, US patients with Lyme disease who also have cytopenias appear to be coinfected with either the agent of human granulocytic ehrlichiosis or with B. microti [4, 5]. (academic.oup.com)
In North America the blacklegged tick, also known as the deer tick is the principle vector of Lyme disease as well as human granulocytic anaplasmosis and human babesiosis. (theanimalkeeper.com)
Undiagnosed coinfection with a second RFLP type [19] or with another tickborne infection, such as human granulocytic ehrlichiosis [4], may have contributed to the overlap in clinical symptoms observed among persons infected with the different subtypes (table 2). (academic.oup.com)