Nigeria, with a population of 230 million, ends up consuming 60% of all the livestock reared throughout West Africa. The northern and eastern borders have large international markets with constant risk of disease incursions. This program, part of the USDA-APHIS-FADDL Global Partnership on Animal and Zoonotic Diseases (GPAZDS), will investigate the 5 major international livestock markets located at the northern and eastern borders, visiting each market twice per month for six months, with sampling of any animals which appear ill.