Question

what happens to the likelihood of reinfection by the same strain of a virus once the body has created antibodies against it?
it decreases significantly
it remains unchanged
it depends on the individuals age

Explanation:

Antibodies are part of the immune system's defense. Once the body creates antibodies against a specific virus strain, these antibodies can recognize and neutralize the virus if it re - enters the body. This recognition and neutralization ability significantly reduces the chance of the body being infected (re - infected) by the same virus strain. The likelihood of reinfection does not remain unchanged as the immune system has a memory of the virus. Also, while age can affect overall immune function, the presence of specific antibodies against a virus strain primarily leads to a significant decrease in reinfection likelihood, not that it depends on age for this specific mechanism of antibody - mediated protection against the same strain.

Answer:

it decreases significantly