Three suspected cases of wild poliovirus type 1 (WPV1) from South Sudan are currently being investigated. All three patients are girls, two of whom are approximately two-years-old and one is eight-years-old. All had previously been immunized with oral polio vaccine (OPV).
Two of the patients are from North Bahr El Gazal state (close to the border with Sudan), and one is from Eastern Equatoria state (close to the border with Kenya and Uganda). They developed paralysis between 15-24 August 2013. Genetic sequencing is ongoing to provide final confirmation of the laboratory results to determine the origin of the isolated viruses.
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