Question

Why is it difficult to make vaccines of viral pathogens?

Answer 1

Answer:

There are many reasons why, including how hard it is to identify the exact piece of an antigen that will trigger production of an effective antibody. And even when vaccines exist, they fail when B cells don't rearrange their DNA segments in a way necessary to manufacture the needed antibodies

Answer 2

There are many reasons why, including how hard it is to identify the exact piece of an antigen that will trigger production of an effective antibody. And even when vaccines exist, they fail when B cells don't rearrange their DNA segments in a way necessary to manufacture the needed antibodies.

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