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首页> 外文期刊>Parasitology >Conquering Switzerland: the emergence of Angiostrongylus vosorum in foxes over three decades and its rapid regional increase in prevalence contrast with the stable occurrence of lungworms
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Conquering Switzerland: the emergence of Angiostrongylus vosorum in foxes over three decades and its rapid regional increase in prevalence contrast with the stable occurrence of lungworms

机译：征服瑞士：三十年多年来狐烷群血清血清血清的出现及其快速区域患病率呈对比度与狭窄的肺虫发生形成鲜明对比

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摘要

Angiostrongylus vasorum, Crenosoma vulpis and CapiUaria aerophila are the most common lungworms of domestic and wild canids. We investigated the short- and long-term lungworm prevalence changes in the Swiss fox population with a focus on A. vasorum. Between 2012 and 2017, lungs and hearts of 533 foxes from north-eastern Switzerland were necropsied and blood samples tested for circulating A. vasorum antigen. Angiostrongylus vasorum prevalence increased steadily from 21.5% in 2012 to 81.8% in 2017. In contrast, C. aerophila and C. vulpis prevalences fluctuated between 41.8 and 74.7%, and 3.6 and 14.9%, respectively. Based on 3955 blood samples collected between 1986 and 2017 from three geographic areas and during four time periods, antigen seropositivity increased from 2.4 to 62.0%. In north-eastern Switzerland, seropositivity was initially low (1.9 and 1.7% in the first two time periods) but increased in the following two decades to 22.2 and 62.0%, respectively. Our findings depict the spectacular expansion of A. vasorum in the past three decades. Regionally, the prevalence in foxes Increased 4-fold within 6 years in some regions. This underpins the important role of foxes as reservoir hosts, likely explaining the increasing number of cases of canine angiostron-gylosis in Switzerland. Our findings are representative of central Europe and may help anticipating future developments in areas where A. vasorum is present but (still) infrequent.
机译：血管管圆线虫、外阴克氏菌和嗜气卷尾蚴是家养和野生犬科最常见的肺虫。我们调查了瑞士狐狸群体中肺吸虫患病率的短期和长期变化，重点是a.vasorum。2012年至2017年间，对来自瑞士东北部的533只狐狸的肺和心脏进行了尸检，并对血液样本进行了循环血管球弧菌抗原检测。血管管圆线虫患病率从2012年的21.5%稳步上升至2017年的81.8%。相比之下，嗜气单胞菌和外阴单胞菌的患病率分别在41.8%和74.7%之间波动，3.6%和14.9%之间波动。根据1986年至2017年间从三个地理区域和四个时间段采集的3955份血液样本，抗原血清阳性率从2.4%上升至62.0%。在瑞士东北部，血清阳性率最初较低（前两个时期分别为1.9%和1.7%），但在接下来的二十年中分别上升到22.2%和62.0%。我们的研究结果描述了过去三十年中血管A.的惊人扩张。在某些地区，狐狸的患病率在6年内增加了4倍。这巩固了狐狸作为宿主的重要作用，可能解释了瑞士犬类旋转血管瘤病病例不断增加的原因。我们的研究结果代表了中欧地区，可能有助于预测血管假丝酵母菌存在但（仍然）不常见的地区的未来发展。

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