Avian Influenza and Newcastle diseases are highly contagious viral diseases susceptible to induce high mortality in birds. Since 1997, highly pathogenic avian influenza virus H5N1 is enzootic in South East Asia. It already spread to Europe (2005) and Africa (2006). Viral transmission from birds to humans has already caused hundred of deaths, however there is no direct human to human transmission. Biosecurity status of developing countries are considered as favorable to the emergence of a potential human influenza pandemic virus by mutation or reassortment. International solidarity action within these countries is therefore essential for veterinarian as well as human health protection.