The Significance of Western Equine Encephalomyelitis Viral Infections in Aedes Trivittatus (Diptera: Culicidae) in Iowa

Scientific review on mosquitoes and mosquito‐borne diseases

“…High to very high Not tested (Aviles et al, 1990) Aedes (Ochl.) trivittatus USA Low Not tested (Green et al, 1980) Culiseta (Climacura) melanura 4 USA High to very high High to very high (Hayes, 1979) 1 Classification based on disseminated infection rate: very high > 80%, high 50 to 80%, moderate 20 to 50%, low 5 to 20%, very low < 5% 2 Classification based on the transmission rate of females with a disseminated infection: very high > 80%, high 50 to 80%, moderate 20 to 50%, low 5 to 20%, very low < 5% 3 Artificial feeding methods 4 Experiments using colonized mosquitoes Summary as provided by the authors: Based on information from virus isolations, vector competence and mosquito feeding behaviour, it can be stated that Culex tarsalis is the natural vectors of WEE virus. Its density is correlated with the disease incidence (Olson et al, 1979), and its western distribution in North America is superimposed on the classical disease distribution.…”