Nazzi F, Martinelli E, Del Fabbro S, Bernardinelli I, Milani N, Iob A, Pischiutti P, Campello C, D'Agaro P
Dipartimento di Biologia e Protezione delle Piante, Università di Udine, Udine, Italy.
Med Vet Entomol. 2010 Sep;24(3):220-6. doi: 10.1111/j.1365-2915.2010.00877.x. Epub 2010 May 30.
A 2-year study was conducted in a mountainous area of northeast Italy to evaluate the occurrence and distribution of ticks, as well as to assess the prevalence of the spirochaete Borrelia burgdorferi sensu lato. All ticks collected were Ixodes ricinus L. (Parasitiformes: Ixodidae). In general, most nymphs and adult ticks were collected from April to July. Tick density was highly variable among sites; however, two areas with different infestation levels were recognized. Prevalences of B. burgdorferi s.l. in nymphal stages were rather variable between sites; overall the prevalence of infected nymphs in the whole area was slightly higher than 20%. The prevalence of B. burgdorferi s.l. in nymphs does not seem to be correlated with nymph density. The correlation between the incidence of Lyme borreliosis (reported human cases/1000 inhabitants/year) and Borrelia prevalence in nymphs was not significant, although a significant correlation was found between borreliosis incidence and nymph density.
在意大利东北部的一个山区进行了一项为期两年的研究，以评估蜱虫的发生和分布情况，并评估狭义疏螺旋体博氏疏螺旋体的流行情况。采集的所有蜱虫均为蓖麻硬蜱（寄螨目：硬蜱科）。一般来说，大多数若虫和成年蜱虫是在4月至7月采集的。蜱虫密度在不同地点差异很大；然而，识别出了两个感染水平不同的区域。不同地点间若虫阶段博氏疏螺旋体狭义种的流行率差异较大；整个区域感染若虫的总体流行率略高于20%。若虫中博氏疏螺旋体狭义种的流行率似乎与若虫密度无关。莱姆病发病率（报告的人类病例数/1000居民/年）与若虫中博氏疏螺旋体流行率之间的相关性不显著，尽管在莱姆病发病率与若虫密度之间发现了显著相关性。
