A client receives the yellow fever vaccine before traveling to the Amazon Basin and asks the nurse how the vaccine provides protection. Which responses by the nurse is the most appropriate?

Question

Select all that apply.
A) "Human macrophages engulf the weakened vaccine virus as if it is dangerous and antigens stimulate the immune system to attack it."
B) "In the lymph nodes, part of the lymphoid system, the macrophages present yellow fever antigens to T cells and B cells."
C) "A response from yellow fever-specific T cells is activated. B cells secrete yellow fever antibodies."
D) "The body's immune system eats away at the protective sheath (myelin) that covers the nerves."
E) "The initial weak infection is eliminated and the client is left with a supply of memory T and B cells for future protection against yellow fever."

Answer 1

Answer: A, B, C, E

Macrophages ingest antigens and signal helper T cells that antigens are present. Lymph nodes filter foreign products or antigens from the lymph system and house and support proliferation of lymphocytes and macrophages. Antibodies directly attack and destroy antigens either before or after antigens invade body cells. The immune system damaging the myelin is an autoimmune response in MS. Memory B cells and T cells remember how to identify the antigen and will reactivate at a future time if the same type of antigen is present.