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  1. The ACIP recommended in the year 2000 that the oral polio vaccine no longer be used. http://www.cdc.gov/ vaccines ...

    1 Answers · Health · 26/12/2009

  2. ...both dropped dramatically, and the public was ready for something different. Sabin 's oral polio vaccine (OPV) fit the bill since it conferred lifelong immunity and was simple...

    4 Answers · Health · 25/02/2007

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