The health ministry has ensured the safety of 'a very limited number' of people who showed some symptoms of being affected by 'the mixed water'
Opposition to inoculations grew after the CIA organised a fake vaccination drive to help track down Al Qaeda's former leader Osama Bin Laden in the Pakistani city of Abbottabad.
"It was an IED (improvised explosive device) explosion in which one of our policemen got martyred while two others were wounded", Mehmood told AFP.
Sadaqat Khan, a local police official, confirmed the toll.
There was no immediate claim of responsibility, but the Pakistani Taliban and other militants have targeted polio vaccinators in the past.
The nationwide polio vaccination campaign aims to vaccinate some 39 million children.
Tuesday's attack follows a devastating year in Pakistan's long fight against polio, with at least 17 cases reported in 2020 so far.
In 2019, the number of polio cases jumped to 144 from just 12 in 2018.
Even as Pakistan has tried to eliminate polio, a new challenge has emerged in the form of a growing global movement against vaccinations.
The phenomenon has attracted adherents worldwide, fuelled by medically baseless claims and proliferated on social media resulting in a resurgence of once-eradicated, highly contagious diseases.
The health ministry has ensured the safety of 'a very limited number' of people who showed some symptoms of being affected by 'the mixed water'
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