A clinical microbiologist oversees the collection, transportation, and analysis of biological samples. Job duties include testing various microorganisms, bacteria, fungi, and viral material. Clinical microbiologists work closely with epidemiologists and other clinical biologists to track, assess, and determine the features of various infectious diseases and outbreaks. Outside of the lab, they may work with health care professionals, researchers, and public officials to brief the public and other interested parties about the spread of infectious disease and prevention methods.