Fig. 2From: Lymphatic filariasis elimination endgame in an urban Indian setting: the roles of surveillance and residual microfilaremia after mass drug administrationTimeline of the different surveys for elimination of lymphatic filariasis in Surat. WHO collaborative Global Programme to Eliminate Lymphatic Filariasis (GPELF) was adopted in India in 1996 and expanded to involve Surat City in 2004. MDA Mass Drug Administration, TAS Transmission Assessment SurveyBack to article page