Report attributes death of infants to human error at Tiruvallur PHC THE measles vaccine administered to children in Tamil Nadu has been given a clean chit by the Central Drugs Laboratory at Kasauli in Himachal Pradesh. In its report submitted to the Union Health Ministry, the lab suggested that human error at the local level could have resulted in the death of four infants last month at Tiruvallur district. Samples of the vaccine had been sent to the lab following the death of children who had developed complications after receiving the vaccine shot. According to the report, the vaccine is completely safe for use, a senior ministry official said. The report will be forwarded to the Department of Family Welfare, which will take further action, including issuing directives to the State Government. Human Biologicals Limited (HBI), a Hyderabad-based company had sup , plied the vaccines. HBI is a wholly owned subsidiary of the National Dairy Development Board. Shortly after the incident, the Centre had directed all State Governments not to use of the vaccine. An order of 90 lakh units of vaccine had been placed with HBI, out of which it had supplied 45 lakh units.