Polio vaccination drive not cancelled, says adviser.

Islamabad -- A senior official associated with Pakistan's polio eradication efforts has refuted reports that the latest nationwide immunisation drive was cancelled owing to heightened security threats.

In a tweet, Babar bin Atta, the prime minister's adviser on polio eradication, said the campaign which commenced on April 22 was a five-day affair which had concluded as per schedule.

' ... let me clearly state that National Polio Campaign was a 5-day affair. It started on Monday and Ended Yesterday. The LQAS (survey to check 95% optimum levels) has been stopped as we know the quality is not 95%. Why waste Government/Donor resources?' he wrote on Twitter.

Another official working on anti-polio efforts also presented a similar view in a talk. 'The nationwide campaign was scheduled to run for...