By Amy Yee
On a cool February morning in north Delhi, India, 35 third graders sat at small desks in a spartan but tidy classroom. They wore blue school uniforms and listened as their teacher asked in Hindi if they had had intestinal worms.
A third of the children raised their hands, including 9-year-old Arjun Prasad. He sometimes felt stomach pain and weakness — symptoms of severe infection — he said. A few minutes later, Arjun and his classmates were given deworming pills, and took them during the class. They were among the 3.7 million children in Delhi who have taken the pills as part of a recent campaign in India’s capital to stamp out the widespread but neglected ailment.