(also index patient)
The first identified case in a group of related cases of a particular communicable or heritable disease.
- All participating subjects gave written, informed consent and were interviewed about exposure to the index case and BCG vaccination status.
- The numbers are large because we were unable to identify the index case.
- Public health departments aren't likely to be the ones diagnosing and identifying an index case of smallpox.
For editors and proofreaders
Syllabification: in·dex case
Definition of index case in:
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.