Abstract
Zoonotic Pathogens in<i>Ixodes scapularis</i>, Michigan
Highlights
Despite Michigan’s proximity to large tick-endemic areas (Wisconsin and Minnesota to the west and Indiana to the south), active and passive surveillance data indicated that the only populations of I. scapularis established in the state before 2002 were in Menominee County in the Upper Peninsula [1,2]
All 4 Babesia odocoilei–positive ticks were co-infected with B. burgdorferi
B. burgdorferi infection in I. scapularis has been reported in Michigan [1,2,3,8]
Summary
To the Editor: Ixodes scapularis, the black-legged tick, is the predominant vector of reportable human vectorborne disease in the United States. Despite Michigan’s proximity to large tick-endemic areas (Wisconsin and Minnesota to the west and Indiana to the south), active and passive surveillance data indicated that the only populations of I. scapularis established in the state before 2002 were in Menominee County in the Upper Peninsula [1,2]. Wildlife sampling and tick dragging in 2002–2003 suggested that I. scapularis had begun to invade southwestern Michigan [3], with nearby populations in northwestern Indiana [4] as the putative source.
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