iluvcowsfightme iluvcowsfightme

13-03-2022
Biology

contestada

GIVING BRAINLIEST Why is it difficult to create a vaccine for the flu?

A. a failure to induce immune response

B. antigen shifting

C. a loss of immunity

D. antibody shifting

Respuesta :

bethrodarte1 bethrodarte1

13-03-2022

Answer:

B. Antigen Shifting

Explanation:

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