Variation in vector competence for dengue 2 virus among 24 collections of Aedes aegypti from Mexico and the United States
Autor(es): Bennett, K. E.; Olson, K. E.; Munoz, M. L.; Fernandez-Salas, I.; Farfan-Ale, J. A.; Higgs, S.; Black, W. C. IV; Beaty, B. J.
Resumo: Aedes aegypti from 24 collections in Mexico and the United States were challenged orally with dengue 2 virus JAM 1409 (DEN-2 JAM 1409). 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.
Palavras-Chave: Biological vectors; Human diseases; Efficiency; Distribution records; Viral diseases; Infectious diseases; Pathogens; Biological sampling; Stomach; Public health; Disease transmission; Competence; Dengue; Regression analysis; Epizootiology; Population studies; Vectors; Aedes aegypti; Culicidae
Imprenta: American Journal of Tropical Medicine and Hygiene, v. 67, n. 1, p. 85-92, 2002.
Descritores: Aedes aegypti - Infectious diseases ; Aedes aegypti - Viral infections ; Aedes aegypti - Virus ; Aedes aegypti - Transmission ; Aedes aegypti - Dengue ; Aedes aegypti - Public health
Data de publicação: 2002
