The project is comprised of repeated annual cross-sectional surveys in sentinel communities before and after initiation of MDA for LF. The surveys will be conducted over a period of 3 years at the following times: 0 (pre-treatment baseline), 1, 2, and 3 years corresponding to annual treatment times. Government health officials as part of the GPELF will administer the MDA (standard regimen recommended by WHO is DEC + ALB). Part of the government-sponsored program will be to screen for LF using ICT card screening and finger stick bloods for measuring the density of blood born microfilaria (MF). The current protocol will assist in collection of these data. As part of the annual treatment infection surveillance the study team will also collect demographic data, history of lymphedema, scrotal swelling (hydrocele), acute filarial fever or adenolymphangitis, and history of prior treatment for LF.