Fig. 2
Comparison of the vulnerability to partially-reverted virus after OPV cessation by serotype. Selected percentiles from the distribution of Rn values for stage 10 partially-reverted OPV virus among 520 subpopulations that used OPV-only in 2013 in the global model [4] as a function of time after homotypic OPV cessation (analysis I). These base case results assume tOPV intensification before the tOPV-bOPV switch for serotype 2 (adopted from Duintjer Tebbens et al. 2016 [15]) and the assume continued high maintenance of population immunity with bOPV SIAs until bOPV cessation for serotypes 1 and 3. a Serotype 1. b Serotype 2. c Serotype 3