The Concentration of Infectious Plaque Forming Units (Pfu) Per Volume

Question

The concentration of infectious plaque forming units (pfu) per volume of fluid is known as the
A) infectivity.
B) virulence.
C) titer.
D) fluid infectivity.

Accepted Answer

The concentration of infectious plaque forming units per volume of fluid is known as the titer. Infectivity refers to the ability of a pathogen to invade and replicate within a host, while virulence refers to the severity of disease caused by a pathogen. "Fluid infectivity" is not a commonly used term in microbiology.