Question

multiple choice question
which term refers to the first patient found in an epidemiological investigation?
○ common-source case
○ propagated case
○ point-source case
○ index case
need help? review these concept resources.

Explanation:

In epidemiology, the "index case" is defined as the first patient identified in an epidemiological investigation. "Common - source case" refers to cases from a single source, "propagated case" involves spread from person - to - person, and "point - source case" is about exposure at a specific point in time/place, none of which match the definition of the first patient found.

Answer:

Index case (the option with "Index case" text)