(also index patient)
Definition of index case in English:
The first identified case in a group of related cases of a particular communicable or heritable disease.
- 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:
- British & World English dictionary
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