BEIJING — The head of China’s food- safety watchdog resigned Monday for failing to stop the widespread contamination of baby formula as the number of children sickened in the scandal soared to nearly 53,000, including four infants who died.
The shake-up came as investigators revealed that China’s biggest producer of powdered milk, Sanlu Group Co., had received complaints as early as December linking its infant formula to illnesses in babies. Months later, tests revealed the milk was tainted with the industrial chemical melamine, which causes kidney stones and can lead to kidney failure.
“During these eight months, the company did not inform the government and did not take proper measures, therefore making the situation worse,” China Central Television reported, citing an investigation by the State Council, China’s Cabinet.
The number of sick children reported by the Health Ministry has jumped from 6,200 to nearly 53,000. Of those, 12,892 remain hospitalized, with 104 of them in serious condition. Another 39,965 children have been treated and released.
In a reflection of the breakdown in supervision of the dairy industry, Sanlu and several other leading companies embroiled in the scandal had been given inspection-free status by the food-safety watchdog.
That privilege has since been rescinded, but the World Health Organization stressed Monday it was only a first step and urged closer monitoring.
Quality issues can crop up at any point in the supply chain, from the farm to the retail outlet, said WHO China representative Hans Troedsson, adding: “It’s clearly something that is not acceptable and needs to be rectified and corrected.”
The resignation of Li Changjiang, who headed the General Administration of Quality Supervision, Inspection and Quarantine since 2001, comes a year after he and the government promised to overhaul the system in response to a series of product-safety scares.
New regulations and procedures were introduced in an attempt to restore consumer confidence and preserve export markets after a string of recalls involving tainted toothpaste, faulty tires, contaminated seafood and, in March 2007, pet food containing melamine that was blamed for the deaths of dogs and cats in the United States.
In an indication of Beijing’s determination to improve product safety, the government in July 2007 executed the disgraced chief of China’s food and drug agency, who was convicted of accepting bribes in exchange for letting fake medicine into the domestic market.
The official Xinhua News Agency said Li stepped down with the approval of China’s Cabinet. The agency “failed to conduct a proper inspection in this case, and Li Changjiang bears responsibility for this. The State Council has accepted his resignation,” China Central Television reported.





