BEIJING, China (CNN) -- Chinese officials said Saturday that 432 babies now have kidney stones after being fed with contaminated baby milkpowder, the official Xinhua news agency reported.
Similar worries seem to have prompted the arrest in November of Zhao Lianhai, who had been campaigning on behalf of the parents of some 300, 000 children who were affected by milkpowder tainted with melamine, an industrial chemical, in 2008.