This MOOC aims to train the participants in emerging infectious diseases surveillance but also in epidemic prevention and control. The course allows the participants to understand why an interdisciplinary approach is needed to understand emerging infectious diseases (epidemiology, biomathematics, virology, immunology, human and animal public health, entomology, clinical research on infectious diseases, sociology, medicine, political sciences, communication sciences on risk, health economics). This MOOC draws on a study on the Chikungunya epidemic that occurred in La Réunion in 2005.