Milk sold by three leading Chinese dairy companies is contaminated with melamine, tests showed on Thursday, the day when the number of infant deaths caused by the chemical rose to four, according to an online report by
More than 6,200 infants who were fed contaminated milk food produced by Sanlu Group have been diagnosed with various urinary tract problems, including kidney stones. Police in Shijiazhuang, where Sanlu is based, said 12 people have been arrested yesterday for their alleged involvement in the milk food scandal, taking the total number of arrests to 18.

The State Council has decided to do away with the system of exempting certain food products from inspection. The government began the exemption system in 2000 to help companies that produced high-quality, globally competitive products avoid the hassle of facing repeated tests. Tests conducted on liquid milk over the past few days showed 24 of the 1,202 batches were contaminated, the General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ) said in a report.

The AQSIQ, however, quoted scientists as saying the contamination level in liquid milk did not pose a big threat to people’s health. Even milk with the highest concentration of melamine is safe for a 60-kg or heavier adult if he or she drinks up to 2 liters a day.