Polio worker gunned down in Pakistan

A polio vaccine campaign worker has been killed by gun fire in Pakistan.

Dawn News reports unidentified assailants targeted an immunisation team in Sultan Zai, a city near the shared border with Afghanistan.

A woman is thought to have been killed and another person injured.

The vaccination campaign in the area has been suspended and security forces cordoned off the attack site and launched a search operation for the suspects.

More than 2.5 million children in Balochistan were to be administered the anti-polio vaccine during the campaign.

Several polio workers in Balochistan and other parts of the country have been killed by militants, while apprehensive parents routinely refuse to have their children inoculated during door-to-door campaigns.

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