Describes a disease that is suspected but not sufficiently developed to produce definite signs and symptoms in the patient. Describes a disease of rapid onset, severe symptoms with brief duration. The incidence of death in a population in a given period of time. An object that is contaminated with a communicable disease. An animal that harbors a contagious disease while showing no signs or symptoms but can spread the disease to others.
Blood serum is used to detect antibodies for specific diseases.