克氏锥虫（动质体目锥虫科）：玻利维亚科恰班巴安第斯山谷野生环境中传播循环的生态学
Trypanosoma cruzi (Kinetoplastida Trypanosomatidae): ecology of the transmission cycle in the wild environment of the Andean valley of Cochabamba, Bolivia.
作者信息
Cortez Mirko Rojas, Pinho Ana Paula, Cuervo Patricia, Alfaro Fernando, Solano Marco, Xavier Samanta C C, D'Andrea Paulo Sergio, Fernandes Octavio, Torrico Faustino, Noireau François, Jansen Ana Maria
机构信息
Departamento de Protozoologia, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365, CP 21045-900 Rio de Janeiro, Brazil.
出版信息
Exp Parasitol. 2006 Dec;114(4):305-13. doi: 10.1016/j.exppara.2006.04.010. Epub 2006 Jun 22.
An active Trypanosoma cruzi transmission cycle maintained by wild rodents in the Andean valleys of Cochabamba Bolivia is described. Wild and domestic Triatoma infestans with 60% infection with T. cruzi were found and was evidenced in 47.5% (rodents) and 26.7% (marsupial) by parasitological and/or serologycal methods. Phyllotis ocilae and the marsupial species Thylamys elegans, are the most important reservoirs followed by Bolomys lactens and Akodon boliviensis. In spite of both genotypes (TCI and TCII) being prevalent in Bolivia, in our study area only T. cruzi I is being transmitted. Our data suggest that wild T. infestans and wild small mammals play an important role in the maintenance of the transmission cycle of T. cruzi. Furthermore, the finding of high prevalence of T. cruzi infection in wild T. infestans point to the risk of the dispersion of Chagas' disease.
本文描述了在玻利维亚科恰班巴的安第斯山谷中，由野生啮齿动物维持的活跃的克氏锥虫传播循环。发现野生和家养的感染克氏锥虫的骚扰锥蝽感染率为60%，通过寄生虫学和/或血清学方法在47.5%（啮齿动物）和26.7%（有袋动物）中得到证实。奥氏叶耳鼠和优雅袋鼬是最重要的宿主，其次是乳白囊鼠和玻利维亚稻鼠。尽管两种基因型（TCI和TCII）在玻利维亚都很普遍，但在我们的研究区域只有克氏锥虫I型在传播。我们的数据表明，野生骚扰锥蝽和野生小型哺乳动物在克氏锥虫传播循环的维持中起着重要作用。此外，在野生骚扰锥蝽中发现高感染率的克氏锥虫表明存在恰加斯病传播的风险。
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