Outbreak investigation is a field within epidemiology that focuses on identifying and controlling the spread of infectious diseases within a specific population or geographic area. This type of research involves identifying the source of the outbreak, determining the mode of transmission, and implementing measures to control and prevent further spread of the disease. Outbreak investigations often involve collaboration between public health agencies, healthcare providers, and research institutions to rapidly respond to and contain outbreaks before they become widespread. This research area plays a crucial role in preventing and managing infectious disease outbreaks to protect the health of the public.