Pakistan's polio health workers make inroads toward eradication

Polio remains prevalent across Pakistan, one of only three countries in the world where the crippling viral disease is endemic. A campaign to dispense vaccinations have helped relieve the crisis, but threats of violence and misinformation from the Taliban are still hampering eradication efforts. In cooperation with the Associated Press, special correspondent Fred de Sam Lazaro reports. (Oct. 26, 2017)