Rural-urban Population Movement, Community Context and Impact on DEC Fortified Salt Program to Eliminate Lymphatic Filariasis.

Diethylcarbamazinecitrate (DEC) salt in conjunction with annual singledose mass drug administration (MDA) with DEC tablets can be considered as potential option to hasten the process of Lymphatic Filariasis (LF) elimination. Consumption of DEC tablet/salt by at least 80% of the endemic population is crucial in achieving elimination in five years. This study examines the determinants of rural-urban population movement and its implication on DEC fortified salt program to control LF. Data was collected through questionnaire from 150 each movers and non-movers from 10 randomly selected villages and also using Key informant (KI) interviews in Villupuram district in Tamil Nadu. Households with at least one family member engaged in movement at any point of time in the previous year, range from 24 - 43% in different villages. Knowledge on cause, control, ongoing LF elimination programs and compliance with DEC tablets (28.7%) and salt (30%) were significantly higher (p<0.05) among non-movers than movers (4.7% and 3.3%respectively). In order to achieve the goal of elimination of LF by 2020, measures need to be undertaken to ensure that the social mobilization activities and LF intervention programs need to cover the 24 - 43% of mobile population.