Infectious disease epidemiology is targeted towards understanding the routes and risks of transmission of pathogens between humans, and from the envrionment to humans, and using this knowledge to design and evaluate the effectiveness of interventions. There is a dynamic interplay between pathogens and humans, which clearly distinguishes infectious disease epidemiology from the epidemiology of non-communicable diseases, such as cardiovascular diseases and oncology. We will introduce epidemiological methods and techniques that are specific for infectious diseases, such as outbreak investigations and (sero)surveillance. Specific (classes of) infectious diseases and their epidemiology will be covered. Other topics of the course include interventions such as vaccination, and antimicrobial resistance.