Question

question
with an increase in age, why is there an increased susceptibility to viral and bacterial infection?
answer
all of the listed responses are correct.
fewer cytotoxic t cells respond to an infection.
b cells are less responsive and antibody levels do not rise as quickly after antigen exposure.
t cells become less responsive to antigens.
i dont know yet

Explanation:

As people age, the immune system undergoes changes. T - cells (including cytotoxic T - cells) become less responsive to antigens. Fewer cytotoxic T - cells respond to an infection. B - cells also show reduced responsiveness, and antibody levels do not rise as quickly after antigen exposure. All these factors contribute to increased susceptibility to viral and bacterial infections.

Answer:

All of the listed responses are correct.