Author/Authors :
Al-Kubati, A.S. Ministry of Public Health - Programme for Elimination of Lymphatic Filariasis, Yemen , Al Qubati, Y. Taiz University - Faculty of Medicine - Department of Dermatology, Yemen , Ismail, W. Smith College - Department of Biological Sciences, USA , Laney, S.J. Smith College - Department of Biological Sciences, USA , El-Setouhy, M. Ain Shams University - Faculty of Medicine - Department of Community Medicine, Egypt , Gad, A.M Ain Shams University - Faculty of Medicine - Department of Entomology, Egypt , Ramzy, R.M.R. National Nutrition Institute, Egypt
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.
