Ministry of National Health Services says the environmental samples collected from Peshawar and Hub have tested positive for wild poliovirus.
A spokesperson of the Ministry said Pakistan Polio Laboratory at the National Institute of Health has confirmed that genetic testing has linked the virus in all samples to the cluster circulating in Afghanistan.
He said the genetic testing of the virus found in the sample from Lahore is still ongoing.
Commenting on the situation, Minister for National Health Services Dr. Nadeem Jan said the government is ensuring integrated measures to eradicate polio.
He said more anti-polio campaigns are being planned to keep children safe from the virus.
Source: Radio Pakistan