A health worker administers pulse polio vaccine to a child in Kolkata, India, Sunday, Jan. 20, 2013. India marked a major success in its battle against polio last year by being removed from the World Health Organization’s list of countries plagued by the crippling disease. The country must pass two years without new cases to be declared polio-free.
An Indian child is administered polio vaccine in Kolkata, India, Sunday, Jan. 20, 2013. <AP Photo/Bikas Das>
