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Meaning of index case | Babel Free

Noun CEFR B2

Definitions

The first documented case in a disease epidemic within a population or the first case of interest in an epidemiological investigation: the case of patient zero (the index patient).

Equivalents

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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See also

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