As the number of Chinese infants reported sickened by tainted milk increased to 53,000, Chinese Premier Wen Jiabao called manufacturers "heartless" and promised stricter laws to protect the public, CNN reported. China's Health Ministry said Sunday that about 13,000 children were hospitalized, while another 40,000 had undergone outpatient treatment for illnesses related to suspected melamine-tainted milk products. At least four children have died, CNN reported.
