Mapping Insecticide Resistance in Dengue Vectors in the Northern Viet Nam, 2010-2013

By using WHO standard procedures bioassay for susceptibility of mosquitoes to insecticides, the study determinate susceptible and resistance of mosquito populations from 101 sites of 12 provinces/ cities in Northern Viet Nam. The widespread insecticide resistance status of dengue vectors of the Northern Viet Nam in the period from 2011-2013 were mapped. The data were collected from Ha Noi, Quang Ninh, Vinh Phuc, Bac Ninh, Cao Bang, Lang Son, Nam Dinh, Thai Binh, Hai Phong, Thanh Hoa, Nghe An and Ha Tinh provinces, which is updated of documentations on the distribution and insecticides resistance status of dengue vectors in Northern Viet Nam, especially pyrethroid resistance status. Almost of Ae. aegypti populations from Ha Noi city were resistant to alphacypermethrin, cyfluthrin, deltamethrin, etofenprox, lambdacyhalothrin, permethrin and DDT, but susceptible to malathion; most of populations in other sites of the North are tolerant. The majority of populations of Aedes albopictus in most studied sites in 12 Northern provinces of Viet Nam were resistant to DDT, but susceptible to alphacypermethrin, cyfluthrin, deltamethrin, permethrin, lambdacyhalothrin, Malathion, a few populations was tolerant.