The cause of the disease is referred to as the ?

Study for the Cengage Microbiology Test with helpful multiple choice questions and detailed explanations. Ace your exam with confidence!

Etiology is the reason a disease occurs—the cause or origin behind the illness. It covers whatever triggers the disease, whether an infectious agent, a toxin, a genetic defect, or a physical injury. In infectious diseases, the specific organism or factor responsible is the etiologic agent, but the term that designates the cause itself is etiology. A pathogen is the type of etiologic factor—the disease-causing organism—but the question asks for the cause in general, so etiology is the best fit. A syndrome describes a pattern of signs and symptoms, not the cause. Epidemiology studies how diseases occur and spread in populations, not the cause itself.