The Most Common Source(s)of Infection in the Central Nervous System

Multiple Choice

The most common source(s) of infection in the central nervous system (CNS) is(are) :

A) hematogenous spread.
B) infections at other sites such as otitis media.
C) organisms gaining access because of anatomic defects in CNS structures.
D) bacteria that are able to travel along nerves leading to the brain.