Poliovirus was detected in the sewage water in Pakistan's east Rawalpindi district during a sampling process, the district health authority said on Saturday.
The sample was collected on Aug. 10, in the district located in the country's east Punjab province where sewage sampling is done on a monthly basis, the health authority said.
The recently detected virus was found to be genetically linked to the YB3A cluster, which is active in Nangarhar, Afghanistan, the health authority said.
Earlier on Aug. 30, poliovirus originating from Afghanistan was detected in the sewage system in Lahore, the provincial capital of Punjab.
Punjab is planning a new campaign in both Rawalpindi and Lahore from Sept. 4 to respond to the positive environmental samples in both cities.
In the five-day anti-polio drive, 800,000 children will be administered vaccine across Rawalpindi with a particular focus on the areas from where the virus was found.
-XINHUA
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