In a rare case, a 14-year-old boy, whose 22 litres of blood was sucked by hookworms in his small intestine since the last two years, was cured through a deworming therapy at a city hospital in New Delhi. The diagnosis was possible only after hospital recommended the rarely-used vitamin capsule-size endoscopy. According to doctors, the boy was referred to Sir Ganga Ram Hospital (SRGH) in August last year with complaints of passage of blood in his stool.