Also called the Salk vaccine IPV consists of inactivated (killed) poliovirus strains of all three poliovirus types. ... However, as IPV does not stop transmission of the virus, OPV is used wherever a polio outbreak needs to be contained, even in countries which rely exclusively on IPV for their routine immunization programme. read more
Type 1 is the most virulent and common. Both the Salk and Sabin vaccines are “trivalent” that is, active against all three virus types. Type 2 poliovirus has not been detected anywhere in the world since 1999. A person who gets polio is immune to future infection from the virus type that caused the polio. read more
Inactivated polio vaccine (IPV) was developed in 1955 by Dr Jonas Salk. Also called the Salk vaccine IPV consists of inactivated (killed) poliovirus strains of all three poliovirus types. IPV is given by intramuscular or intradermal injection and needs to be administered by a trained health worker. read more