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enot [183]
3 years ago
11

Vaccines were developed to provide immunity to a viral infection. Which of the following is a likely hypothesis of why the small

pox vaccine is no longer given?
Biology
1 answer:
Elenna [48]3 years ago
6 0
People have grown completely immune to smallpox, meaning that the vaccine has done it's job and is no longer needed.
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AnnyKZ [126]

Answer:

B

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