Outbreak of polio in adults--Namibia, 2006.

After 10 years with no detected wild poliovirus (WPV) transmission in Namibia, an outbreak of poliomyelitis cases occurred in 2006. The outbreak was traced to importation from neighboring Angola of WPV type 1 (WPV1) that originated in India. As of October 2, 2006, a total of 19 cases of polio, with paralysis onset between early May and June 26, had been confirmed by isolation of WPV1 from stool specimens, primarily from young adult males; six of the patients died. This report describes outbreak investigation and response activities and provides an update on routine and supplemental immunization activities (SIAs) and acute flaccid paralysis (AFP) surveillance in Namibia.