According to results shared by the National Emergency Operations Centre, the presence of the poliovirus was confirmed in sewage samples collected from Rawalpindi, Faisalabad, Lahore, Karachi, Sukkur, Killa Abdullah, Quetta, D.I.

A sample is considered positive in poliovirus is detected in sewage water.

A polio case can be reported in any city due to the frequent movement of people from one city to another, but the presence of the virus in sewage water means that a vaccination campaign in the area did not meet its target.

'The continued presence of the poliovirus in the sewage of these major cities poses risks to all vulnerable and unprotected children across Pakistan.

'It is a reminder to everyone that the presence of poliovirus in the sewage of these towns can cause life-long paralysis, especially if the child is not repeatedly vaccinated, in the same town or in a distant town due to frequent population movement.