A<unk>  (or a person under<unk>  refers to a person who had been in close contact with a person with confirmed infection or/and may have been to place where there is an outbreak or superspreading event. This person exhibits the symptoms of the disease and is required to be tested, and undergo a quarantine or isolation while waiting for the laboratory results. It is a term used by health care workers in classifying<unk> s during evaluation and testing in contact tracing in times of infectious disease outbreaks.
Patient under investigation
Simulated patient
Emergency medical responder levels by U.S. state
Variant of concern
Place of safety
In Case of Emergency
Hospital volunteer
E-patient