Identification of the people from whom engorged Aedes aegypti took blood meals in Florida, Puerto Rico, using polymerase chain reaction-based DNA profiling.

Autor(es): De Benedictis John; Chow-Shaffer Esther; Costero Adriana; Clark Gary G; Edman John D; Scott Thomas W

Resumo: We used polymerase chain reaction-based DNA profiling to construct allelic profiles for residents and visitors of 22 houses in Florida, Puerto Rico, and human DNA from blood meals in Aedes aegypti that were collected in those homes. Complete profiles were obtained for < or = 2 days after blood ingestion. Eighteen percent of the meals came from two different people. There was no evidence of meals from > or = 2 people. Eighty percent of the meal sources were identified, > 70% were taken from residents of the collection house, and > 90% were from residents of the study community. Across the community, feeding was non-random with a bias towards young adults and males. Three people accounted for 56% of the meals. Our results confirm that multiple feeding on different people is an important component in the role of Ae. aegypti in dengue virus transmission and help explain the spatial distribution of dengue cases in a previous epidemic in Florida, Puerto Rico.

Imprenta: The American Journal of Tropical Medicine and Hygiene, v. 68, n. 4, p. 437-446, 2003

Descritores: Aedes aegypti - DNA ; Aedes aegypti - Genome ; Aedes aegypti - Pathogenesis ; Aedes aegypti - Viral infections ; Aedes aegypti - Virus ; Aedes aegypti - Transmission ; Aedes aegypti - Dengue ; Aedes aegypti - Epidemic ; Aedes aegypti - Public health

Data de publicação: 2003