Low entomological impact of new water supply infrastructure in southern Vietnam, with reference to dengue vectors
Autor(es): Tran, H. P.; Huynh, T. T. T.; Nguyen, Y. T.; Kutcher, S.; O'Rourke, P.; Marquart, L.; Ryan, P. A.; Kay, B. H.
Resumo: We did a prospective study in southern Vietnam where new water infrastructure was added. New 1,200-L tanks may present potential breeding grounds for Aedes aegypti, particularly when sealed lids were not always supplied. Some householders in these communes received a piped water supply, however there was no reduction in water storage practices. The prevalence of Aedes aegypti immatures in tank and tap households reached 73%, but were non-significantly different from each other and from control households that received no infrastructure. In all three communes, standard jars comprised from 48% to 71% of containers but were associated with > 90% of III IV instars and pupae on occasions. In contrast, project tanks contributed from 0-21% of the total population. Non-functional or no lids were apparent 4 months after installation in 45-76% of new tanks, but there was no difference between communes with lids and without lids.
Palavras-Chave: Instars; Breeding sites; Pupae; Vectors; Pest control; Hygiene; Aquatic insects; Public health; Water supply; Breeding; Dengue; Water supplies; Aedes aegypti
Imprenta: American Journal of Tropical Medicine and Hygiene, v. 87, n. 4, p. 631-639, 2012.
Descritores: Aedes aegypti - Dengue ; Aedes aegypti - Public health
Data de publicação: 2012
