Levy Michael Zachary, Bowman Natalie M, Kawai Vivian, Waller Lance A, Cornejo del Carpio Juan Geny, Cordova Benzaquen Eleazar, Gilman Robert H, Bern Caryn
Centers for Disease Control and Prevention, Atlanta, Georgia 30341-3724, USA.
Emerg Infect Dis. 2006 Sep;12(9):1345-52. doi: 10.3201/eid1209.051662.
In Arequipa, Peru, vectorborne transmission of Chagas disease by Triatoma infestans has become an urban problem. We conducted an entomologic survey in a periurban community of Arequipa to identify risk factors for triatomine infestation and determinants of vector population densities. Of 374 households surveyed, triatomines were collected from 194 (52%), and Trypanosoma cruzi-carrying triatomines were collected from 72 (19.3%). Guinea pig pens were more likely than other animal enclosures to be infested and harbored 2.38x as many triatomines. Stacked brick and adobe enclosures were more likely to have triatomines, while wire mesh enclosures were protected against infestation. In human dwellings, only fully stuccoed rooms were protected against infestation. Spatially, households with triatomines were scattered, while households with T. cruzi-infected triatomines were clustered. Keeping small animals in wire mesh cages could facilitate control of T. infestans in this densely populated urban environment.
在秘鲁阿雷基帕，克氏锥虫通过侵扰锥猎蝽进行病媒传播已成为一个城市问题。我们在阿雷基帕的一个城郊社区开展了一项昆虫学调查，以确定锥猎蝽侵扰的风险因素和病媒种群密度的决定因素。在接受调查的374户家庭中，有194户（52%）采集到了锥猎蝽，72户（19.3%）采集到了携带克氏锥虫的锥猎蝽。豚鼠圈舍比其他动物圈舍更易受到侵扰，且栖息的锥猎蝽数量是其他圈舍的2.38倍。堆砌的砖石和土坯圈舍更有可能有锥猎蝽，而金属丝网圈舍则可防止侵扰。在人类住所中，只有完全粉饰灰泥的房间可防止侵扰。在空间上，有锥猎蝽的家庭分布零散，而有感染克氏锥虫锥猎蝽的家庭则呈聚集分布。在这个人口密集的城市环境中，将小动物饲养在金属丝网笼中有助于控制侵扰锥猎蝽。
