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  • Title: Infections with Tickborne Pathogens after Tick Bite, Austria, 2015-2018.
    Author: Markowicz M, Schötta AM, Höss D, Kundi M, Schray C, Stockinger H, Stanek G.
    Journal: Emerg Infect Dis; 2021 Apr; 27(4):1048-56. PubMed ID: 33755546.
    Abstract:
    The aim of this prospective study was to assess the risk for tickborne infections after a tick bite. A total of 489 persons bitten by 1,295 ticks were assessed for occurrence of infections with Borrelia burgdorferi sensu lato, Anaplasma phagocytophilum, Rickettsia spp., Babesia spp., Candidatus Neoehrlichia mikurensis, and relapsing fever borreliae. B. burgdorferi s.l. infection was found in 25 (5.1%) participants, of whom 15 had erythema migrans. Eleven (2.3%) participants were positive by PCR for Candidatus N. mikurensis. One asymptomatic participant infected with B. miyamotoi was identified. Full engorgement of the tick (odds ratio 9.52) and confirmation of B. burgdorferi s.l. in the tick by PCR (odds ratio 4.39) increased the risk for infection. Rickettsia helvetica was highly abundant in ticks but not pathogenic to humans. Knowledge about the outcome of tick bites is crucial because infections with emerging pathogens might be underestimated because of limited laboratory facilities. Knowledge about outcomes of tick bites is crucial because infections with emerging pathogens might be underestimated.
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