Infection and transmission of Cache Valley virus by Aedes albopictus and Aedes aegypti mosquitoes

Parasites & Vectors
Victoria B AyersDana L Vanlandingham

Abstract

Cache Valley virus (CVV; Bunyavirales, Peribunyaviridae) is a mosquito-borne arbovirus endemic in North America. Although severe diseases are mainly observed in pregnant ruminants, CVV has also been recognized as a zoonotic pathogen that can cause fatal encephalitis in humans. Human exposures to CVV and its related subtypes occur frequently under different ecological conditions in the New World; however, neurotropic disease is rarely reported. High prevalence rates of neutralizing antibodies have been detected among residents in several Latin American cities. However, zoophilic mosquito species involved in the enzootic transmission are unlikely to be responsible for the transmission leading to human exposures to CVV. Mechanisms that lead to frequent human exposures to CVV remain largely unknown. In this study, competence of two anthropophilic mosquitoes, Aedes albopictus and Ae. aegypti, for CVV was determined using per os infection to determine if these species could play a role in the transmission of CVV in the domestic and peridomestic settings of urban and suburban areas. Aedes albopictus were highly susceptible to CVV whereas infection of Ae. aegypti occurred at a significantly lower frequency. Whilst the dissemination rat...Continue Reading

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Citations

Jul 19, 2020·Scientific Reports·Yan-Jang S HuangStephen Higgs
Aug 7, 2021·Emerging Microbes & Infections·Krisangel LópezAlbert J Auguste

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Methods Mentioned

BETA
dissection
PCR
electrophoresis

Software Mentioned

Excel
GraphPad
SigmaPlot

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