Oral polio vaccine supply

Since 2005 the supply landscape has become more complex with the introduction of two types of monovalent OPV (types 1 and 3) and, in 2010, bivalent OPV. This has contributed to a rise in the weighted average price of OPV from US$ 0.08 per dose to approximately US$ 0.14 per dose since 2000. The flexibility of manufacturers, to adjust production based on the OPV formulation required, comes at a cost. Currency fluctuations, the demand for high titres and the finite lifespan of OPV – for which demand will drop after the eradication of polio – also contribute to this price increase. Despite these factors, the weighted average price of each OPV dose in 2011 (US$ 0.128) and 2012 (US$ 0.127) show decreases since 2010.