A teenage boy whose HIV-positive blood was passed on to a pregnant woman, in a case of shocking medical negligence that has triggered a major controversy in Tamil Nadu, reportedly tried to kill himself on Thursday as his family struggled to deal with the fallout. The woman visited the government hospital in Virudhunagar district's Sattur on December 3 for a prenatal checkup when she was found to be anaemic. She was advised blood transfusion and four days after the procedure, it was found that the blood transfused was HIV-infected. The blood was negligently labelled safe by the hospital's lab technicians.