1 Laboratory of Entomology, Wageningen University and Research , Wageningen, the Netherlands .
2 Environmental Systems Analysis Group, Wageningen University , Wageningen, the Netherlands .
Vector Borne Zoonotic Dis. 2017 Feb;17(2):99-107. doi: 10.1089/vbz.2015.1933. Epub 2016 Nov 28.
A longitudinal investigation on tick populations and their Borrelia infections in the Netherlands was undertaken between 2006 and 2011 with the aim to assess spatial and temporal patterns of the acarological risk in forested sites across the country and to assess variations in Borrelia genospecies diversity. Ticks were collected monthly in 11 sites and nymphs were examined for Borrelia infections. Tick populations expressed strong seasonal variations, with consistent and significant differences in mean tick densities between sites. Borrelia infections were present in all study sites, with a site-specific mean prevalence per month ranging from 7% to 26%. Prevalence was location-dependent and was not associated with tick densities. Mean Borrelia prevalence was lowest in January (4%), gradually increasing to reach a maximum (24%) in August. Borrelia afzelii represented 70% of all infections, with Borrelia burgdorferi sensu stricto, Borrelia garinii, and Borrelia valaisiana represented with 4%, 8%, and 10%, respectively. The density of infected nymphs and the proportional distribution of the four Borrelia genospecies, were significantly different between sites. The results show a consistent and significant spatial and temporal difference in acarological risk across the Netherlands.
2006 年至 2011 年期间，荷兰进行了一项关于蜱种群及其伯氏疏螺旋体感染的纵向调查，目的是评估全国森林地区节肢动物风险的时空模式，并评估伯氏疏螺旋体基因型多样性的变化。每月在 11 个地点采集蜱虫，检查若虫是否感染伯氏疏螺旋体。蜱种群表现出强烈的季节性变化，各地点的平均蜱密度存在明显差异。所有研究地点均存在伯氏疏螺旋体感染，每月的特定地点平均流行率为 7%至 26%。流行率取决于位置，与蜱密度无关。平均伯氏疏螺旋体流行率最低为 1 月（4%），逐渐增加至 8 月达到最高（24%）。所有感染中，伯氏疏螺旋体 afzelii 占 70%，伯氏疏螺旋体 burgdorferi sensu stricto、伯氏疏螺旋体 garinii 和伯氏疏螺旋体 valaisiana 分别占 4%、8%和 10%。感染若虫的密度和四种伯氏疏螺旋体基因型的比例分布在各地点之间存在显著差异。结果表明，荷兰各地的节肢动物风险存在一致且显著的时空差异。
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