An infectious disease specialist has specialized training in the diagnosis and treatment of contagious diseases.<br>Infectious diseases, also known as contagious or transmissible diseases, are those that stem from pathogen from a host organism. These infections may spread to other carriers through physical touch, airborne inhalation, bodily fluids or contaminated foods.
Infectious disease specialists identify whether the disease is caused by bacteria, a virus, a fungus or a parasite often through blood tests and then determine what course of treatment, if any, is necessary.

A general practitioner is similar to a family practitioner in that they treat patients of all ages with a variety of health concerns. These doctors treat everyday ailments, some acute and chronic diseases, and also provid health checkups, physicals, inoculations and preventative care.
General practitioners differ from family practitioners because they are not required to complete an additional residency in family medicine after completing their medical school residency. Like family practitioners, general practitioners will also provide referrals to patients who are in need of a specialist.