I work in eco-epidemiological research that allow knowing which are the reservoirs, the vector species and the key factors driving the spread of viruses. These factors are very important in order to find preventive measures that reduce the risk of transmission to the human population, livestock and pets. The emergence of a viral epidemic depends on the dynamics of the virus, which in turn will be influenced by reservoir dynamic and external environmental factors such as temperature, rainfall, degree of habitat conservation, the situation of stress affecting the reservoir species.