FIRST REPORT OF AN INFECTED TRIATOMINE BUG IN AN URBAN AREA OF TUXTLA GUTIERREZ, CHIAPAS, MEXICO

BIOCYT Biología Ciencia y Tecnología Pub Date : 2021-03-09 DOI:10.22201/fesi.20072082e.2021.14.77383

J. A. De Fuentes-Vicente, Adriana Gómez-Gómez, N. G. SANTOS-HERNÁNDEZ, Christian Ruiz-Castillejos, E. Gómez-Sánchez, D. Vidal-López, Laura Flores-Villegas, Javier Gutiérrez-Jiménez, A. Moreno-Rodríguez

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引用次数: 4

Abstract

Analyze the first report of an infected triatomine in an urban house in Tuxtla Gutiérrez, Chiapas; identifying the vector specie’s, the virulence and the genetic group of Trypanosoma cruzi and a possible infection in the house inhabitants. The specimen was transferred to the laboratory where a stool sample was obtained by abdominal pressure. The virulence of T. cruzi was measured in mice and amplification of the mini exon gene was done to determine the lineage. In the inhabitants the ELISA test was performed to rule out Chagas disease . The specimen was identified as Triatoma dimidiata and it was infected with parasites belonging to the TcI lineage, which reached parasitaemia of 5.6X10 6 parasites/ml of blood. The ELISA test were negative. T. dimidiata is the predominant species in the southern of the country and its finding in an urban area highlights the importance of having entomological surveillance programs. TcI lineage has a greater distribution in Mexico and no infection was found in the inhabitants.

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墨西哥恰帕斯州tuxtla gutierrez市区首次报告感染锥蝽

分析在恰帕斯州Tuxtla gutisamurez的一个城市房子感染的第一次报告确定克氏锥虫的病媒种类、毒力和遗传群，以及家庭居民中可能发生的感染。标本被转移到实验室，在那里通过腹部压力获得粪便样本。测定了克氏锥虫在小鼠体内的毒力，并扩增了该小外显子基因以确定其谱系。在居民中进行酶联免疫吸附试验以排除恰加斯病。经鉴定为双斑三角瘤(Triatoma dimidiata)，感染TcI谱系寄生虫，血中寄生虫数达到5.6X10 6只/ml。ELISA检测结果为阴性。dimidiata是该国南部的优势种，其在城市地区的发现突出了开展昆虫学监测计划的重要性。TcI谱系在墨西哥有较大的分布，在居民中未发现感染。

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BIOCYT Biología Ciencia y Tecnología

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