Polio workers under fresh attack

• Four attacks take place on Wednesday, killing three workers
• On Tuesday, five workers are killed
• Pakistanis have viewed polio vaccination campaigns with suspicion

Read a version of this story in Arabic.

Islamabad, Pakistan (CNN) — Health workers administering polio vaccinations came under fresh attack in Pakistan on Wednesday, a troubling development in a nation that remains one of three in the world where the disease has yet to be eradicated.

Three workers were killed in separate attacks, a day after five others died in similar circumstances.

All of them were part of a massive vaccination campaign nationwide.

The attacks prompted authorities to suspend the campaign throughout the country.

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