The onset of a given epidemic is indicated by a sharp rise in the number of cases reported daily over a brief interval. This indicates that the mode of transmission is
A) host to host.
B) a common source.
C) insect vector.
D) mechanical vector.

Question

Quizplus · Accepted Answer

A sharp rise in the number of cases indicates that the source of infection is a common source, meaning that multiple individuals are being exposed to the same source of infection at the same time. Host-to-host transmission would result in a more gradual increase, while insect or mechanical vector transmission would likely result in a sporadic or intermittent pattern of cases.

The Onset of a Given Epidemic Is Indicated by a Sharp