Fig. 3From: Implementation of coordinated global serotype 2 oral poliovirus vaccine cessation: risks of inadvertent trivalent oral poliovirus vaccine useMinimum time until inadvertent trivalent oral poliovirus vaccine (tOPV) use in routine immunization (RI) leads to a serotype 2 circulating vaccine-derived poliovirus (cVDPV2) outbreak (Analysis II, rectangular pattern) a in a hypothetical population with no seasonality in the basic reproduction number (R0) b in realistic populations with seasonalityBack to article page