Poliovirus surveillance is one of the key pillars of the global poliovirus eradication effort. The primary system to detect poliovirus transmission is surveillance for polio cases among individuals with acute flaccid paralysis (AFP), supplemented by environmental surveillance (ES).
In October 2008, Namibia was certified polio free and continued to maintain its polio free status since then. However, the country remains at high risk of importations of vaccine derived polio viruses (VDPVs) and other vaccine preventable diseases due to sub-optimal immunization coverage.