Some diseases require only one vaccination that lasts forever. Others require repeated vaccinations. Why might a vaccination like the flu vaccine only last a short time? A. The virus is more easily transmitted. B. The virus mutates much more rapidly. C. The virus is less dangerous. D. The virus is much smaller.
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Home » Biology » Some diseases require only one vaccination that lasts forever. Others require repeated vaccinations. Why might a vaccination like the flu vaccine only last a short time? A. The virus is more easily transmitted. B. The virus mutates much more rapidly.