A health worker administers the oral polio vaccine to a newborn baby at Colvin Women's Hospital in Allahabad, India, on Thursday, Jan. 12, 2012. (AP Photo/Rajesh Kumar Singh)

Photo by: Rajesh Kumar Singh

A health worker administers the oral polio vaccine to a newborn baby at Colvin Women's Hospital in Allahabad, India, on Thursday, Jan. 12, 2012. (AP Photo/Rajesh Kumar Singh)