A third child has died and 6,244 are now seriously ill in China because they ingested toxic formula. An unnamed official says the health threat has been there for at least a month -- but the public was never informed. Amidst the growing scandal, China is scrambling to stop all exports of formula that could contain the chemical melamine. "China's dairy industry has been pushed to the brink of outright crisis," said Li Zhiqi, a Beijing consultant who works with dairy companies. Read more hot stories that Moms Are Talking About.