Steven had mumps as a child.Why did he not experience symptoms at the age of 41 after he was again exposed to the mumps virus?
A) He had an injection with weakened virus shortly before he was exposed.
B) He had natural passive immunity to ward off the virus.
C) He had artificial passive immunity that he received from his brother after he had the mumps.
D) He developed active immunity as the result of having mumps as a child.

Question

Quizplus · Accepted Answer

Steven most likely did not experience symptoms after being exposed to the mumps virus again because he had developed active immunity from having mumps as a child. When an individual is infected with a virus, their immune system produces specific antibodies to fight against the virus. These antibodies remain in the body and can recognize and fight against the virus if they are exposed to it again in the future. Therefore, Steven's immune system would have been able to quickly and effectively fight off the mumps virus as a result of his previous infection and immunity.

Steven Had Mumps as a Child