The nonpolio AFP rate (ie, the number of AFP cases not due to polio per 100000 children aged <15 years per year) is indicative of the sensitivity of the surveillance system; a nonpolio AFP rate ≥ 2/100000 is considered sufficiently sensitive to identify wild poliovirus (WPV) or circulating vaccine-derived poliovirus (cVDPV) cases where poliovirus continues to circulate [4]. Here, AFP is linked to poliomyelitis.