Only one case has been reported in India so far in 2011, compared to 39 cases during the same period last year.
India was one of only four countries where polio remained endemic. It’s still a serious problem in Afghanistan, Pakistan and Nigeria.
Immunization is hampered in those countries by conflict, politics, the remoteness of some communities and the frequent distrust of outsiders administering the vaccines.
Neighboring Pakistan is experiencing a surge in new polio cases, prompting Indian officials to conduct immunizations at border crossings.
Photo: World Health Organization