queenv4706 queenv4706
  • 09-08-2018
  • Biology
contestada

Vaccines were developed to provide immunity to a viral infection. Which of the following is a likely hypothesis of why the smallpox vaccine is no longer given?

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Аноним Аноним
  • 09-08-2018
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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