Fig. 1From: Analysis of vaccination campaign effectiveness and population immunity to support and sustain polio elimination in NigeriaOverview of the modeling procedure. (a) We first estimated campaign effectiveness, a measure of how reported doses respond to campaigns. (b) Using campaign effectiveness, we estimated the number of doses reported by a child, given the number of SIAs experienced. (c) We estimated immunity based on the 6- to 59-month-old age distribution, the number of doses for a given age, and vaccine effectivenessBack to article page