Pakistan is losing ground in the battle against polio, with the country suffering its worst outbreaks in more than a decade. Efforts to reverse that trend are hampered by suspicions that health workers are spies, following the CIA's use of a vaccination team to track Osama bin Laden. But as VOA Deewa's Mudassir Shah and Arshad Mohmand report from Shabqadar, in Khyber Pukhtunkhwa province, suspicions about the vaccine itself are also proving an obstacle.
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