Despite the significant progress, several challenges remain:
Vaccine-derived poliovirus (VDPV): In rare cases, the weakened virus in OPV can mutate and spread, causing outbreaks. Geopolitical instability: Conflict zones and remote areas pose challenges for vaccination campaigns. Vaccine hesitancy: Misinformation and cultural beliefs can lead to reluctance in accepting vaccines. Funding: Sustained financial support is crucial for ongoing immunization and monitoring efforts.
