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Table 1 Timing of mass drug administration (MDA) and major village and school survey activities

From: Lymphatic filariasis control in Tanzania: effect of six rounds of mass drug administration with ivermectin and albendazole on infection and transmission

MDA Village surveys School surveys
  Sep-04: Survey 1, in hamlets 1, 2, 3 and 4 (mf, clin, Og4C3, Bm14) Sep-04: Survey 1 (ICT)
Oct-04: MDA1   
  Jan-06: Survey 2, in hamlets 1, 2, 3 and 4 (mf, Og4C3, Bm14) Sep-05: Survey 2 (ICT)
Feb-06: MDA2   
  Jan-07: Survey 3, in hamlets 1, 2, 3 and 4 (mf, Og4C3, Bm14) Oct-06: Survey 3 (ICT)
May-07: MDA3   
  Oct-07: Survey 4, in hamlets 1, 2, 3 and 4 (mf, Og4C3, Bm14) Oct-07: Survey 4 (ICT)
  Oct-08: Survey 5, in hamlets 1, 2, 3 and 4 (mf, Og4C3, Bm14) Oct-08: Survey 5 (ICT)
Feb-09: MDA4   
  Oct-09: Survey 6, in hamlets 1, 2, 3 and 4 (mf) Oct-09: Survey 6 (ICT)
Nov-09: MDA5   
  Nov-10: Survey 7, in hamlets 1, 2, 5 and 6 (ICT, mf) Nov-10: Survey 7 (ICT, Bm14)
Dec-10: MDA6   
  Nov-11: Survey 8, in hamlets 1, 2, 5 and 6 (ICT, mf, Bm14) Dec-11: Survey 8 (ICT, Bm14)
  1. Hamlets 1, 2, 3 and 4 were in Kirare village, hamlet 5 in Kiomoni village and hamlet 6 in Kisimatui village. Types of examinations: mf = microfilariae; clin = chronic clinical manifestations; Og4C3 = circulating filarial antigens by TropBio Og4C3 ELISA; ICT = circulating filarial antigens by ICT cards; Bm14 = antibodies to recombinant Bm14 antigen (by in-house ELISA during village surveys 1-5; by CELISA from Cellabs during surveys 7 and 8). In addition to listed activities, entomological surveillance was carried out in Kirare village continuously, and questionnaire surveys for MDA coverage was carried out in all communities and schools shortly after each MDA (the post-MDA 5 and 6 questionnaires in communities also assessed for possession of bed nets). A population census covering hamlets included in subsequent surveys was done in 2004 (before Survey 1) and 2010 (before Survey 7). Impregnated bed nets were distributed to every household in the study area in September 2011.