Variation in vector competence for dengue 2 virus among 24 collections of Aedes aegypti from Mexico and the United States
Autor(es): Bennett Kristine E,Olson Ken E,Muñoz Maria de Lourdes,Fernandez-Salas Ildefonso,Farfan-Ale Jose A,Higgs Steve,Black William C,Beaty Barry J
Resumo: Aedes aegypti from 24 collections in Mexico and the United States were challenged orally with dengue 2 virus JAM1409 (DEN-2 JAM1409). The vector competence (VC) of the populations ranged from 24% to 83%. Mosquito populations from the Yucatan exhibited greater VC than those from other areas of Mexico. The presence or absence of a midgut infection barrier (MIB) and a midgut escape barrier (MEB) was determined for mosquitoes in each population. The percentage of mosquitoes exhibiting an MIB ranged from 14% to 59%, and those exhibiting an MEB ranged from 4% to 43% in the collections. The MIB and MEB were not completely independent as determined by regression analysis. Midgut infection rates were dose dependent.
Imprenta: The American Journal of Tropical Medicine and Hygiene, v. 67, n. 1, p. 85-92, 2002
Identificador do objeto digital: 10.4269/ajtmh.2002.67.85
Descritores: Aedes aegypti - Flaviviridae ; Aedes aegypti - Pathogenesis ; Aedes aegypti - Viral infections ; Aedes aegypti - virus ; Aedes aegypti - Transmission ; Aedes aegypti - Dengue ; Aedes aegypti - Public health
Data de publicação: 2002
