Some viral pathogens evade detection by the vertebrate immune system by a mechanism that involves
A)becoming a symbiont.
B)becoming nonvirulent.
C)frequent changing of surface antigens.
D)becoming metabolically inactive.
E)becoming a sporE.

Question

Quizplus · Accepted Answer

Some viruses, such as the influenza virus, are able to frequently change their surface antigens through a process called antigenic shift or antigenic drift. This allows them to evade detection by the immune system and continue to infect the host.

Some Viral Pathogens Evade Detection by the Vertebrate Immune System