More melamine-tainted milk found in China

Shops and supermarkets across China have been withdrawing dairy products after the revelation that powdered baby milk, and now liquid milk, has been contaminated. A government watchdog group said nearly ten per cent of milk samples taken in recent days contained the industrial chemical melamine, which makes the protein content appear higher. Four babies have died and more than six-thousand children have fallen ill as a result of the contamination.
Guest: Michael Bristow, BBC China correspondent