Diallo M., Thonnon J., Fontenille Didier. (2000). Vertical transmission of the yellow fever virus by Aedes aegypti (Diptera, Culicidae) : dynamics of infection in F1 adult progeny of orally infected females. American Journal of Tropical Medicine and Hygiene, 62 (1), p. 151-156. ISSN 0002-9637.
Titre du document
Vertical transmission of the yellow fever virus by Aedes aegypti (Diptera, Culicidae) : dynamics of infection in F1 adult progeny of orally infected females
Année de publication
2000
Type de document
Article
Auteurs
Diallo M., Thonnon J., Fontenille Didier
Source
American Journal of Tropical Medicine and Hygiene, 2000,
62 (1), p. 151-156 ISSN 0002-9637
Vertical transmission of yellow fever virus from orally infected females to their progeny was experimentally demonstrated in 2 Aedes aegypti colonies from the Dakar and Koungheul regions in Senegal. A total of 10350 F1 adult mosquito progeny were tested. The overall vertical transmission rate was 0.97%, with no significant difference between the Dakar and Koungheul colonies. The infection rates were significantly higher in females (1.15%) than in males (0.74%) in both colonies. The virus was not isolated from the progeny of the first oviposition cycle (OVC1). The true infection rates were 0.27% and 1.99%, respectively, for the OVC2 and OVC3 progeny in the Dakar colony, and 1.1% and 1.48%, respectively, for the OVC2 and OVC3 progeny in the Koungheul colony. The infection rates increased with extrinsic incubation in both male and female offspring of the two colonies, reaching 5.2% in 20-day-old OVC3 female progeny in the Dakar colony. The epidemiologic consequences of these results are discussed. (Résumé d'auteur)
