Bomb kills two more polio workers in Pakistan

A bomb yesterday killed two polio vaccination workers in Pakistan's northwestern tribal region, officials said, the latest in a series of such attacks which have now killed 19 in two months.
There has been no claim of responsibility for any of the killings. But the umbrella Taliban faction last year banned polio vaccinations in the tribal region of Waziristan, condemning the campaign as a cover for espionage.
Pakistan, Afghanistan and Nigeria are the only countries in the world where polio is endemic. But rumours about vaccines being a plot to sterilise Muslims have long dogged efforts to tackle the highly infectious disease.