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Ideology, Violence Prevent Polio Eradication in Pakistan

Pakistan is one of three countries left in the world where polio remains endemic, the other two being neighboring Afghanistan, and Nigeria. Sharon Behn reports from Islamabad that with the help of the international community, the number of polio cases in Pakistan has dropped from 25,000 16 years ago, to just over 40 cases this year. But a Taliban ban on vaccinations and attacks on health workers mean that the highly infectious disease continues to spread.