PESHAWAR - Gunmen shot five health workers on an anti-polio drive in a string of attacks in Pakistan on Tuesday, officials said, raising fears for the safety of workers immunizing children against the crippling disease.
It was not clear who was behind the shootings but Taliban insurgents have repeatedly denounced the anti-polio campaign as a Western plot.
The immunization campaign has been suspended in Karachi, Pakistan's biggest city of 18 million people, health officials said.
Three women were killed and a man was wounded in two separate attacks on health workers in Karachi on Tuesday, said senior police superintendent police Imran Shaukat. An anti-polio worker in Karachi was shot dead on Monday, the United Nations said.
In the northwestern city of Peshawar, a woman supervising an anti-polio campaign there was wounded on Tuesday when gunmen on a motorbike shot her in the head, said government official Javed Marwar.