The First Case in an Epidemic is Called the _________

Question

The first case in an epidemic is called the _________.
A)break case
B)index case
C)prime case
D)alpha case

Accepted Answer

The first case in an epidemic is commonly referred to as the "index case" or "patient zero". This individual is the first known case of the infectious disease or condition that then spreads to others, resulting in an outbreak or epidemic. The other answer choices are not commonly used terms to describe the first case in an epidemic.