bivalent opv

From trivalent to bivalent oral poliovirus vaccine

Basic virology, Information / By

For the first time since April of 1955, recipients of poliovirus vaccine will no longer receive all three serotypes. This past Sunday the World Health Organization orchestrated a synchronized switch from trivalent to bivalent oral poliovirus vaccine (OPV) in 150 countries. The reason for the switch is clear: type 2 poliovirus was declared eradicated last year, and the …

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Is bivalent poliovirus vaccine a good idea?

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A new bivalent poliovirus vaccine, consisting of infectious, attenuated type 1 and type 3 strains, has been deployed in Afghanistan. The use of this vaccine was recommended by the Advisory Committee on Poliomyelitis Eradication, the global technical advisory body of the Global Polio Eradication Initiative. Considering the polio experience in Nigeria, the elimination of type 2 …

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