Organized by the Institute of Environmental Health, Lisbon School of Medicine at the University of Lisbon, the 1st Post-Graduate course “One Health – Human health, Animal health, Environmental health arises from the recognition of the need to provide conceptual and practical tools to all those who are dedicated or intend to dedicate to study and research in one or more of the vertices of the One Health conceptual form. This course is aimed at all professionals in the areas of Medical and Biological Sciences, Engineering, Social Sciences, who are directly or indirectly involved in research and/or intervention in the fields of human health, animal health and/or environmental health. Portuguese will be the official language of the course. The Portuguese language is one of the most widely used languages of the Indo-European family, and one of the most widespread languages in the world, with more than 265 million speakers around the world.