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Detection of tick-borne pathogens in questing Ixodes ricinus in the French Pyrenees and first identification of Rickettsia monacensis in France

机译：在法国比利牛斯山脉搜寻蓖麻tick的of传病原体的检测和法国立克次体立克次体的首次鉴定

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摘要

Ticks are important vectors of several human and animal pathogens. In this study, we estimated the prevalence of important tick-borne infections in questing ticks from an area in Southwestern France (Hautes-Pyrénées) inhabited by Pyrenean chamois (Rupicapra pyrenaica pyrenaica) experiencing high tick burden. We examined adult and nymph ticks collected by the flag dragging method from 8 to 15 sites in the Pic de Bazès during the years 2009, 2011, 2013 and 2015. PCR assays were conducted on selected ticks for the detection of Borrelia burgdorferi s.l., Babesia spp., Rickettsia spp., spotted fever group (SFG) Rickettsia and Anaplasma phagocytophilum. Randomly selected positive samples were submitted for sequence analysis. A total of 1971 questing ticks were collected including 95 males, 101 females and 1775 nymphs. All collected ticks were identified as Ixodes ricinus. Among them, 696 ticks were selected for pathogen detection and overall prevalence was 8.4% for B. burgdorferi s.l.; 0.4% for Babesia spp.; 6.1% for A. phagocytophilum; 17.6% for Rickettsia spp.; and 8.1% for SFG Rickettsia. Among the sequenced pathogens, we detected in this population of ticks the presence of Babesia sp. EU1 and Rickettsia helvetica, as well as Rickettsia monacensis for the first time in France. The detection of these pathogens in the Pic de Bazès highlights the potential infection risks for visitors to this area and the Pyrenean chamois population.
机译：壁虱是几种人类和动物病原体的重要载体。在这项研究中，我们从法国西南部（上皮比利牛斯）（一个高tick负担的比利牛羚羊（Rupicapra pyrenaica pyrenaica）居住的地区）搜寻壁虱时，估计了重要的壁虱传播感染的患病率。我们检查了在2009年，2011年，2013年和2015年期间通过旗拖方法从Pic deBazès的8到15个地点收集的成年和若虫tick。 。，立克次体属，斑点热组（SFG）立克次体和吞噬性无浆膜。随机选择的阳性样品被提交进行序列分析。总共收集了1971个搜寻壁虱，其中包括95头雄性，101头雌性和1775头若虫。所有收集的s均被鉴定为蓖麻。其中，选择了696个s进行病原体检测，而伯氏疏螺旋体的总体患病率为8.4％。巴贝斯虫属为0.4％;嗜A.phagocytophilum为6.1％；立克次体占17.6％; SFG立克次体为8.1％。在测序的病原体中，我们在detected中发现了巴贝斯虫。 EU1和立克次体立克次体，以及法国立克次体立克次体。在Pic deBazès中检测到这些病原体突显了该地区游客和比利牛斯羚羊种群的潜在感染风险。

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