Share this entry

index case Syllabification: in·dex case
(also index patient)

Definition of index case in English:

noun

Medicine
The first identified case in a group of related cases of a particular communicable or heritable disease.
Example sentences
  • The fifth cluster of infection was the family of the index patient.
  • Four of his family members developed the infection; the brother of the index patient had the earliest date of onset.
  • We found no studies comparing index patients given chemoprophylaxis with those who were not.

Definition of index case in:

Share this entry

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources