Autor(es): McLean D M,Clarke A M,Coleman J C,Montalbetti C A,Skidmore A G,Walters T E,Wise R

Resumo: A Yukon strain of California encephalitis virus (snowshoe hare subtype) was transmitted by bites of laboratory-bred Aedes aegypti mosquitoes after 3 weeks of extrinsic incubation at 80°F and after 4 weeks at 55°F after intrathoracic injection. Transmission first occurred after 4 weeks incubation at 80 or 55°F when mosquitoes were infected by feeding. Zero-passage strains of dengue-2 virus were transmitted after 6 days of extrinsic incubation at 90°F after feeding or intrathoracic injection, after 6 to 13 days incubation at 75°F following injection, after 13 days at 80°F following feeding, and after 13 to 27 days at 55°F following injection. Although virtually all mosquitoes were infected at the time transmission occurred, California encephalitis virus was transmitted by less than 50% of mosquitoes, but 80% or more of mosquitoes infected with the dengue-2 strains transmitted virus. Enveloped virions about 35 nm diameter were observed in the cytoplasm of acini of salivary glands of mosquitoes infected with dengue-2 virus.

Imprenta: Canadian Journal of Microbiology, v. 20, n. 2, p. 255-262, 1974

Identificador do objeto digital: 10.1139/m74-040

Descritores: Aedes aegypti - Flaviviridae ; Aedes aegypti - virus ; Aedes aegypti - Dengue ; Aedes aegypti - Public health

Data de publicação: 1974

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