The New Diseases and the Old Agents

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Abstract

This is a changing World. Man is at the origin of many changes with impact in animal and human health. Among them we can refer the development of fast round-the-World transport, the industrialization and its environmental effects, the increasing complexity of the food chain, the urbanization and the technological development, allowing manipulation of disease agents and creating the present information centered society. These changes have an influence on the re-emergence of animal and human diseases which result, among other reasons, from the microbial adaptation and change, the infection of new populations, the use of new means of dispersion, the expansion of vectors, or even from the improved capacity of diagnosis and better community awareness. In this work some of these aspects are discussed and research contribution of the Faculty of Veterinary Medicine of Lisbon is briefly referred.