All polio environmental samples test negative for the first time in history of Pakistan

polio in KPKnews54s4f545fs45fISLAMABAD: For the first time in the country’s history, all the environmental samples for polio have tested negative.
A total of 40 samples, collected under the supervision of the World Health Organisation (WHO) in mid-April from 14 cities, were analysed at the National Institute of Health (NIH).
A sample is deemed positive if the polio virus is found in sewerage water, which is the basic parameter to determine if anti-polio campaigns have been successful.