Table 1.

Poliovirus classification and summary of types.

Realm:	Riboviria
Kingdom:	Orthornavirae
Phylum:	Pisuviricota
Class:	Pisoniviricetes
Order:	Picornavirales
Family:	Picornaviridae
Genus:	Enterovirus
Species:	Enterovirus C
Virus:	Poliovirus
Poliovirus Serotypes:	PV1, PV2, PV3
Vaccine-Derived Poliovirus (VDPV):	Variant mutated from Oral Polio Vaccine (OPV)
VDPV Types:	Circulating VDPVs (cVDPVs), Immunodeficiency-associated VDPVs (iVDPV), Ambiguous VDPVs (aVDPVs)
Wild Poliovirus (WPV)	WPV type 1 (WPV1), WPV type 2 (WPV2), WPV type 3 (WPV3)