AFP and poliomyelitis: Four principal strategies were developed for polio eradication, which were proven effective in many countries including (a) high immunization coverage with at least three doses of oral polio vaccine (OPV) in infants aged <1 year; (b) supplemental doses of OPV during national immunization days; (c) mopping-up vaccination in areas or among populations at high risk of poliovirus transmission; and (d) sensitive surveillance and investigation of AFP [3].