• Poliovirus: part of the enterovirus group, Picornaviridae (positive-sense) RNA virus family.
  • Three poliovirus serotypes: P1 (Mahoney), P2 (MEF-1), and P3 (Saukett).
    • Wild poliovirus type 3, believed to be eradicated. Last known isolation in 2012, Nigeria.
  • Humans are only natural host.

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Last updated: October 9, 2020