What is the difference between a secondary immune response occurring without a vaccine compared to the same response occurring after a vaccine?
A) A person who has received a vaccine does not have a secondary response, while someone without a vaccine does.
B) A person who has received a vaccine may have a secondary immune response on the first exposure to the normal, living pathogen.
C) Even with a vaccine, someone must still go through development of memory cells before they can have a secondary response.
D) All of the above answers apply.
E) Only answers B and C apply.

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The Answer of What is the difference between a secondary immune response occurring without a vaccine compared to the same response occurring after a vaccine?
A) A person who has received a vaccine does not have a secondary response, while someone without a vaccine does.
B) A person who has received a vaccine may have a secondary immune response on the first exposure to the normal, living pathogen.
C) Even with a vaccine, someone must still go through development of memory cells before they can have a secondary response.
D) All of the above answers apply.
E) Only answers B and C apply.

What Is the Difference Between a Secondary Immune Response Occurring