Fig. 5From: Characterization of outbreak response strategies and potential vaccine stockpile needs for the polio endgameOutbreak response supplemental immunization activity (oSIA) vaccine usage for the base case outbreak response strategy, based on 100 iterations with the global policy of at least 5 years of inactivated poliovirus vaccine (IPV) in all populations for 5 years after oral poliovirus vaccine (OPV) cessation of the last serotype (note change in x-axis scales). a Summary statistics of serotype 1 monovalent OPV oSIA needs over time. b Summary statistics of serotype 2 monovalent OPV oSIA needs over time. c Summary statistics of serotype 3 monovalent OPV oSIA needs over time. d Summary statistics of IPV oSIA needs over time Back to article page