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Gunmen in Pakistan have shot dead a mother and daughter who were administering polio vaccinations in the south-western city of Quetta.
Sakina Bibi, 38, and her daughter, Rizwana, 16, had been giving drops to children when two gunmen on a motorcycle opened fire, police said.
No group has said it was behind the attack.
However, Islamist militants oppose vaccination, saying it is a
This post was originally posted on BBC News. Read the rest of the story at http://www.bbc.co.uk/news/world-asia-42738360.