Infectious disease (ID) physicians are considered the “detectives” of the medical world.They take on difficult cases, looking for clues that might point to the causes of hard to diagnose infections. ID physicians have specialized training in identifying, treating, and managing infections caused by viruses, bacteria,fungi, and parasites. They have also received comprehensive education in the benefits and adverse effects of antibiotics, and are well-versed in infection control,epidemiology, and immunology.