Abstract：
Following a first clinical case of infection by Diphyllobothrium dendriticum in Switzerland in 2006, we report a second case in the country. The species was identified by molecular methods. In the Swiss, French and Italian subalpine regions, human diphyllobothriasis has seen a comeback since the late 1980\'s, and Diphyllobothrium latum is usually considered the causative agent of the disease. In addition, several locally acquired and imported clinical infections due to allochthonous Diphyllobothrium species have been documented in the last years. Due to the colonisation potential of these parasites and their probably underestimated presence in the human population, there is a need for discriminating them at the medical laboratory level. Because the morphological characters are very similar among the different taxa, a correct identification requires the use of molecular methods. Molecular identification would improve diagnosis and help monitor the distribution of Diphyllobothrium species in Europe.
摘要：
继2006年在瑞士发生第一例树枝状二叶草感染的临床病例之后，我们报告了该国的第二例病例。通过分子方法鉴定了该物种。在瑞士，法国和意大利亚高山地区，自1980年代后期以来，人类双叶病已经卷土重来，和双叶草通常被认为是该疾病的病原体。此外,在过去的几年中，已经记录了由于同种异体二叶虫物种引起的一些本地获得性和输入性临床感染。由于这些寄生虫的定殖潜力以及它们在人类中的存在可能被低估，有必要在医学实验室一级区分他们。因为不同分类群的形态特征非常相似，正确的鉴定需要使用分子方法。分子鉴定将改善诊断并有助于监测欧洲二叶草物种的分布。
