kr989341 kr989341
  • 12-11-2018
  • Health
contestada

Explain the reason there are still some cases of polio in the United States.

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AL2006
AL2006 AL2006
  • 10-12-2018

1).  The vaccine is not 100% effective.

2).  There are still people who don't allow their children to be vaccinated.  (They don't understand why this is child abuse.)


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