title: Impact of polystyrene beads as a mosquito control measure to supplement lymphatic filariasis elimination activities in Socotra Island, Yemen.
abstract: Lymphatic filariasis (LF) is targeted for worldwide elimination. In Yemen, all mainland implementation units met the WHO criteria for stopping mass drug administration (MDA) after 5 rounds. However, in Socotra Island these criteria were not met. Our study evaluated the efficacy of applying expanded polystyrene beads (EPBs) on the Culex population and the effect on LF transmission. Human and mosquito surveys were conducted in 40 randomly selected households in Hadibo (capital of Socotra) before and after application of EPBs. The EPBs intervention resulted in a reduction in mosquito density of 80% and a 64.3% reduction in microfilaria prevalence. The majority of interviewed households (98%) thought EPBs considerably reduced the mosquito population. After the intervention all collected pools tested negative. Application of EPBs is an effective supplement to MDA for achieving the goal of LF elimination.
authors.affiliation: Programme for Elimination of lymphatic Filariasis, Ministry of Public Health, Taiz, Yemen. a-samidku@hotmail.com
authors.forename: A S
authors.initials: AS
authors.lastname: Al-Kubati
authors.forename: Y
authors.initials: Y
authors.lastname: Al Qubati
authors.forename: W
authors.initials: W
authors.lastname: Ismail
authors.forename: S J
authors.initials: SJ
authors.lastname: Laney
authors.forename: M
authors.initials: M
authors.lastname: El-Setouhy
authors.forename: A M
authors.initials: AM
authors.lastname: Gad
authors.forename: R M R
authors.initials: RM
authors.lastname: Ramzy
mesh_terms: D000818:Animals; D003465:Culex / Q000469:parasitology; D004605:Elephantiasis, Filarial / Q000453:epidemiology / Q000517:prevention & control* / Q000635:transmission; D019353:Endemic Diseases / Q000517:prevention & control*; D006801:Humans; D009032:Mosquito Control / Q000379:methods*; D010043:Outcome and Process Assessment, Health Care; D011137:Polystyrenes; D018709:Statistics, Nonparametric; D011795:Surveys and Questionnaires; D014958:Wuchereria bancrofti; D015006:Yemen / Q000453:epidemiology
chemical_list: D011137:Polystyrenes