Domestic dogs and cats as sources of Trypanosoma cruzi infection in rural northwestern Argentina
Domestic dogs and cats as sources of Trypanosoma cruzi infection in rural northwestern Argentina
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DOI：
10.1017/s0031182006001259
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发表时间：
2007-01-01
期刊：
影响因子：
2.4
通讯作者：
Cohen, J. E.
中科院分区：
文献类型：
--
作者：
Gurtler, R. E.;Cecere, M. C.;Cohen, J. E.
在阿根廷西北部2个受感染的农村村庄，对家猫和家犬的克氏锥虫感染和国内致病锥虫的宿主喂养模式进行了纵向评估。对86只犬和38只猫进行了T.通过血清学和/或异种诊断确定的克氏感染。犬的复合感染率（60%）随年龄和感染的T.害虫狗和猫具有相似的高感染力，感染宿主的流行率（41-42%），以及在广泛的感染虫密度下对虫的感染性。血清学阳性犬对细菌的感染性随犬龄的增加而显著下降，且呈高度聚集性。个体犬对细菌的感染性随时间显著自相关。国内T。在检测的1085只寄生虫中，以狗为食的寄生虫的感染率（49%）高于以猫（39%）、人（38%）和鸡（29%）为食的寄生虫。T.犬的cruzi至少为8（.）2.猫和狗都是流行病学上重要的细菌和住户感染源，狗几乎是猫的3倍。
The reservoir capacity of domestic cats and dogs for Trypanosoma cruzi infection and the host-feeding patterns of domestic Triatoma infestans were assessed longitudinally in 2 infested rural villages in north-western Argentina. A total of 86 dogs and 38 cats was repeatedly examined for T. cruzi infection by serology and/or xenodiagnosis. The composite prevalence of infection in dogs (60%), but not in cats, increased significantly with age and with the domiciliary density of infected T. infestans. Dogs and cats had similarly high forces of infection, prevalence of infectious hosts (41-42%), and infectiousness to bugs at a wide range of infected bug densities. The infectiousness to bugs of seropositive dogs declined significantly with increasing dog age and was highly aggregated. Individual dog infectiousness to bugs was significantly autocorrelated over time. Domestic T. infestans fed on dogs showed higher infection prevalence (49%) than those fed on cats (39%), humans (38%) or chickens (29%) among 1085 bugs examined. The basic reproduction number of T. cruzi in dogs was at least 8(.)2. Both cats and dogs are epidemiologically important sources of infection for bugs and householders, dogs nearly 3 times more than cats.