Wild poliovirus outbreak in Afghanistan: A wake-up call for global health experts

•Pakistan and Afghanistan are two endemic nations for polio and a potential source of infection for global transmission.•The polio spread is mostly due to humanitarian crises in Afghanistan and weakened polio surveillance and immunization plan.•Strict oversight of cross-border polio vaccination is a cornerstone for polio eradication now.•Environmental sampling for WPV and VDPV should be undertaken on a wide scale in high-risk locations to monitor and control global export.