The course provides the students with a wide perspective to ongoing research on bovine mastitis. The participants will increase their understanding of different aspects of mastitis and be able to plan and conduct research projects and critically analyze data. The course program includes research methods used to study mastitis bacteria as well as the host response of the cow. The main aspects covered are diagnostics, pathogenesis, immunology, and epidemiology of bovine mastitis. New methods such as molecular biology and immunological methods will be in the focus. The course is aimed for PhD students doing research on bovine mastitis, but can be useful also for veterinarians specializing in dairy production.