Departamento de Salud, Grupo Enfermedades Emergentes y Epidémicas, El Colegio de la Frontera Sur, San Cristóbal de Las Casas, Chiapas, México.
Instituto de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas, Tuxtla Gutiérrez, Chiapas, México.
Vector Borne Zoonotic Dis. 2023 Nov;23(11):583-587. doi: 10.1089/vbz.2022.0099. Epub 2023 Sep 11.
Triatomine bugs are natural vectors of , which causes Chagas disease or American trypanosomiasis. The role of sylvatic triatomine species as vectors of . in Mexico remains to be fully understood. Our research on the epidemiology of Chagas disease in Southeastern Mexico involved sampling triatomines in rural settings. A triatomine was collected in a peridomestic environment of a rural dwelling in the state of Chiapas. The triatomine was identified morphologically as an adult female Stal. Microscopic analysis revealed flagellate forms of in the feces of the . collected. This was confirmed by quantitative polymerase chain reaction. Amplification of the mini-exon gene showed that the infecting . corresponded to lineage I. This is the first report from Mexico of . found infected in a human dwelling, which represents an important adaptation process to inhabit human environments.
锥蝽是克氏锥虫的天然载体，而克氏锥虫会引起恰加斯病或美洲锥虫病。在墨西哥，林栖型锥蝽作为克氏锥虫的传播媒介的作用仍有待充分了解。我们在墨西哥东南部开展的恰加斯病流行病学研究涉及在农村地区采集锥蝽。在恰帕斯州的一个农村住宅的家庭环境中采集到了一只锥蝽。这只锥蝽经形态学鉴定为成年雌性 Stal。显微镜分析显示，采集到的粪便中存在克氏锥虫的鞭毛体。这一结果通过定量聚合酶链反应得到了证实。对小外显子基因的扩增表明，感染 的 与谱系 I 相对应。这是墨西哥首例在人类住宅中发现受感染的锥蝽的报告，这代表了其向人类环境栖息的重要适应过程。
