A modem poultry sector is expanding in the Dakar region, Senegal, in order to rapidly supply the fast-growing urban human population with animal proteins. Dakar is the capital of this country and represents 20 per cent of the total population (2 millions inhabitants) on 0.5 per cent of the whole territory. The use of exotic poultry breeds unsuited to tropical management conditions, the rapid multiplication of poultry houses and the lack in health measures facilitate outbreaks and spread of various diseases. The Newcastle disease still causes high mortality; new diseases, as the avian encephalomyelitis, appear threatening the poultry productions development. To overcome this bottleneck, veterinarians, specialised in poultry, have approached the Avian Pathology Laboratory to set up an information exchange system with a view to quantifying the existing pathology temporally and spatially and enabling a more rapid and efficient reaction on the field.