Effect of Existing Practices on Reducing Aedes aegypti Pre-adults in Key Breeding Containers in Ho Chi Minh City, Vietnam

Abstract

Abstract. This study aimed to evaluate the effects of existing practices of residents in reducing pre-adult Aedes aegypti (L.) infestation and to assess the effect of dengue-related knowledge on the practices. A house-to-house survey was conducted in two areas with different socioeconomic status in Ho Chi Minh City between October and November 2007. Some residents in both the areas used covers on the productive containers such as the jars and plastic buckets (i.e., 58% and 81% in the two study areas), and it was effective in reducing Ae. aegypti infestation: odds ratio (OR) of 4.0 and 4.9 (95% confidence interval [CI]: 1.49-10.76 and 1.2-19.57, respectively) for the containers with inappropriate covers compared with those with appropriate covers in the two areas, respectively. Appropriate cover use was an effective practice; however, no beneficial role of the knowledge related to dengue in promoting the practice was identified.

Effect of Peridomestic Environments on Repeated Infestation by Preadult Aedes aegypti in Urban Premises in Nha Trang City, Vietnam

“…aegypti develop in them. 12,18 Although it may be appropriate to use the characteristics of the premises alone as the criterion for the identification of productive premises in some countries, like Australia, where indoor breeding containers are not common, 11 such a strategy is not useful for identifying premises with high Ae . aegypti infestation in congested urban areas in Vietnam and other countries with similar conditions.…”

Can Daytime Use of Bed Nets Not Treated with Insecticide Reduce the Risk of Dengue Hemorrhagic Fever Among Children in Vietnam?

“…5 The breeding sites of dengue vector mosquitoes (i.e., Aedes aegypti ) are located in and around households and may include indoor water jars, basins, and vases. [6][7][8][9] Because such containers are often indispensable, it is difficult to limit their use. 9 As a result, household residents are highly susceptible to Ae.…”

New Mosquito Control Techniques as Countermeasures Against Insecticide Resistance

“…aegypti are located and this might account for the strong selection pressure toward Ae. aegypti (Kawada et al, 2009). In Vietnam, 24 tonnes of DDT was used for residual treatment against malaria vectors in 1993 and 1994.…”

“…Jars, tanks, and drums provide suitable breeding sites for Ae. aegypti in Vietnam (Phong and Nam, 1999;Nam et al, 2000;Tsuzuki et al, 2009) and these breeding sites are important targets for controlling immature stages of Ae. aegypti.…”