title: Low entomological impact of new water supply infrastructure in southern Vietnam, with reference to dengue vectors.
abstract: 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.
authors.affiliation: Institute Pasteur, Ho Chi Minh City, Vietnam. hautran68@gmail.com
authors.forename: Hau P
authors.initials: HP
authors.lastname: Tran
authors.forename: Trang T T
authors.initials: TT
authors.lastname: Huynh
authors.forename: Yen T
authors.initials: YT
authors.lastname: Nguyen
authors.forename: Simon
authors.initials: S
authors.lastname: Kutcher
authors.forename: Peter
authors.initials: P
authors.lastname: O'Rourke
authors.forename: Louise
authors.initials: L
authors.lastname: Marquart
authors.forename: Peter A
authors.initials: PA
authors.lastname: Ryan
authors.forename: Brian H
authors.initials: BH
authors.lastname: Kay
mesh_terms: D000330:Aedes / Q000254:growth & development / Q000821:virology*; D000818:Animals; D003715:Dengue / Q000453:epidemiology / Q000635:transmission* / Q000821:virology; D003716:Dengue Virus; D004772:Entomology / Q000379:methods*; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D007303:Insect Vectors / Q000254:growth & development / Q000821:virology*; D009032:Mosquito Control; D014744:Vietnam / Q000453:epidemiology; D014867:Water; D014881:Water Supply / Q000592:standards*
chemical_list: D014867:Water