阿根廷科尔多瓦地方性库蚊种群对地方性圣路易斯脑炎病毒株的传播。
Transmission of endemic St Louis encephalitis virus strains by local Culex quinquefasciatus populations in Cordoba, Argentina.
机构信息
Laboratorio de Arbovirus, Instituto de Virología 'Dr J. M. Vanella', Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Calle Enfermera Gordillo Gomez, Ciudad Universitaria, CP5016 Córdoba, Argentina.
出版信息
Trans R Soc Trop Med Hyg. 2013 May;107(5):332-4. doi: 10.1093/trstmh/trt023. Epub 2013 Mar 8.
BACKGROUND
St Louis encephalitis virus (SLEV) is a re-emerging human pathogen widely distributed in the American continent. Although it is not fully understood, the SLEV transmission network may involve Culex quinquefasciatus mosquitoes as vectors and Columbidae species as hosts.
METHODS
To calculate infection rates, we inoculated Cx. quinquefasciatus mosquitoes from Córdoba, Argentina by feeding them on viremic chicks.
RESULTS
We observed differences in infection rate among the viral strains, the highest rate (78/87 mosquitoes, 90.8%) being seen in strain 78V-6507. After re-feeding on susceptible chicks, mosquitoes were able to transmit the virus.
CONCLUSION
Our findings suggest that Cx. quinquefasciatus populations are susceptible to and able to transmit different SLEV strains.
背景
圣路易斯型脑炎病毒（SLEV）是一种重新出现的人类病原体，广泛分布于美洲大陆。尽管其传播网络尚未完全了解，但可能涉及库蚊作为传播媒介和雀形目鸟类作为宿主。
方法
我们通过给感染病毒的小鸡喂食，将来自阿根廷科尔多瓦的库蚊接种病毒。
结果
我们观察到不同病毒株的感染率存在差异，最高感染率（78/87 只蚊子，90.8%）出现在 78V-6507 株。经过再次喂食易感小鸡，蚊子能够传播病毒。
结论
我们的研究结果表明，库蚊种群易受不同的圣路易斯型脑炎病毒株感染，并能够传播这些病毒。
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