Question

What happens to people who survive a specific infection?

A) Develop chronic infection
B) Gain immunity
C) Experience severe symptoms
D) Develop allergic reactions

Answer 1

Upon re-exposure to the same pathogen, a secondary adaptive immune response is generated, which is stronger and faster than the primary response. This immunological memory protects us from getting diseases repeatedly from the same pathogen.

Step-by-step explanation:

Upon re-exposure to the same pathogen, a secondary adaptive immune response is generated, which is stronger and faster than the primary response. The secondary response often eliminates the pathogen before it can cause significant tissue damage or any symptoms. This immunological memory protects us from getting diseases repeatedly from the same pathogen. By this mechanism, an individual's exposure to pathogens early in life spares them from these diseases later in life.