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. 2015 Sep;21(9):1574–1577. doi: 10.3201/eid2109.150301

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US cases of Lyme disease, ehrlichiosis, anaplasmosis, babesiosis, and spotted-fever group rickettsioses reported to the Centers for Disease Control and Prevention, 2001–2013. Counts include confirmed and probable cases, according to the case definition in effect in each year. Anaplasmosis cases were reported as human granulocytic ehrlichiosis before 2008. Ehrlichiosis refers to infections caused by Ehrlichia chaffeensis, E. ewingii, and undetermined species. *Babesiosis was first designated a nationally notifiable condition during 2011.