title: Combined field and laboratory evaluation of a long-term impregnated bednet, PermaNet.
abstract: For how long does the insecticidal effect of long-lasting nets achieve high Anopheles mortality? Four PermaNets tested previously in Colombia for wash resistance were bioassayed again after 3 years of use and 23 washes. The tests were done both in Colombia and a reference laboratory in Indonesia. Additionally the residual concentration of deltamethrin on the nets was chemically analysed. The results showed high Anopheles mortality and a mean deltamethrin concentration of 9.6 mg/m2. Discrepancies with other studies are discussed.
authors.affiliation: Latin American Centre for Health Research, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool L3 5QA, UK. kroegera@who.int
authors.forename: A
authors.initials: A
authors.lastname: Kroeger
authors.forename: O
authors.initials: O
authors.lastname: Skovmand
authors.forename: Q C
authors.initials: QC
authors.lastname: Phan
authors.forename: D T
authors.initials: DT
authors.lastname: Boewono
mesh_terms: D000818:Animals; D000852:Anopheles; D001512:Bedding and Linens; D001681:Biological Assay; D003105:Colombia; D005260:Female; D006801:Humans; D007306:Insecticides / Q000008:administration & dosage / Q000032:analysis*; D007846:Laundering; D009032:Mosquito Control / Q000379:methods* / Q000592:standards; D009570:Nitriles; D011481:Protective Clothing; D011722:Pyrethrins / Q000008:administration & dosage / Q000032:analysis*; D015996:Survival Rate
chemical_list: D007306:Insecticides; D009570:Nitriles; D011722:Pyrethrins; C017180:decamethrin