a. Spatial distribution of AFP cases, b. the contacts and c. the number of nOPV2 supplementary immunisation activities (SIAs), d. Temporal distribution of the number of AFP cases stratified by the number of contacts sampled per case, e. Spatial and f. Temporal distribution of the false negative AFP (FN AFP: those whose stool tested negative for VDPV2 but whose contact(s)’ stool was VDPV2-positive. Basemap layer: WHO GIS Centre for Health (https://gis-who.hub.arcgis.…).