The study will be conducted in three phases: the pre treatment assessment of lymphatic filariasis infection and transmission parameters, treatment phase with annual single dose of albendazole and ivermectin and the post treatment assessment of Anopheles gambiae s.l mosquitoes, the transmission parameters of the vectors in the community, human infection prevalence post treatment using Giemsa -stained thick smears and others test like the Immuno chromatographic test (ICT).