patient under investigation

English

Noun

patient under investigation (plural patients under investigation)

  1. (public health) A person who had been in close contact with a patient who has a confirmed infection or/and who may have been to place where there is an outbreak or superspreading event.
    Synonym: PUI
    Coordinate term: patient zero
  2. Used other than figuratively or idiomatically: see patient,‎ under,‎ investigation.