Question

How does a viral immunization help prevent disease?

A. The altered virus remains in the body and outcompetes the natural version if the virus returns.
B. Memory cells that develop in response to the weakened virus will respond more quickly if the virus returns.
C. The nonspecific immune response will prevent the virus from entering the body.
D. The altered virus remains in the body and recognizes itself if the virus returns.

Answer 1

When you go through viral immunization, this virus is injected into the body.

When the virus enters the body, the body's immune system recognizes this virus, and memory cells are developed to this specific virus.

These memory cells develop because the body wants to protect itself from any other invasion of this virus in the future. So the memory cells will then respond rapidly if this virus shows up again in the future.

Therefore, the answer is: B) Memory cells that develop in response to the weakened virus will respond more quickly if the virus returns.