plural index patients
Definition of index patient
: an individual affected with the first known case of an infectious disease or genetically transmitted condition or mutation in a population, region, or family : index case sense 2
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“Index patient.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/index%20patient. Accessed 16 Jan. 2021.
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Time Traveler for index patient
The first known use of index patient was in 1951
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