Human transportation influences Aedes aegypti gene flow in Southeast Asia.

Estimates of population genetic organization and gene flow of Aedes aegypti, the main vector of dengue viruses, have provided insights into dengue epidemiology. To assess the role of the vector in the changing pattern of dengue in Southeast Asia, extensive studies on the genetic differentiation of Aedes aegypti have been carried out. Among them, vector differentiation has been estimated for Cambodia, Thailand and South Vietnam using microsatellite markers. Analysis showed that there was less genetic differentiation between mosquito populations from Ho Chi Minh City and Phnom Penh than from either of them and Thailand, suggesting that passive migrations through human transportation help to explain this pattern of differentiation.