Tag Archives: 28 sewage samples test positive for wild poliovirus

ISLAMABAD: As many as 28 environmental samples collected from 19 districts in January and two collected from Quetta and Khuzdar in December have tested positive for wild poliovirus type 1 (WPV1). According to an official of the Regional Reference Laboratory for Polio Eradication at the National Institute of Health (NIH), the virus was found in four sewage samples each from …

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