In a rare move that covers products from an entire country, not just those from a few rogue manufacturers, the Food and Drug Administration will detain all milk-related shipments from China.

The agency said the order, which covers products made with milk, was needed as a precaution to keep out foods contaminated with the industrial chemical melamine, which can cause serious kidney problems, according to the Associated Press.

“The problem of melamine contamination in Chinese food products is a recurring one,” said the FDA order posted on the Internet. Under the directive, FDA inspectors can hold foods made with milk ingredients at ports of entry until independent tests show they are melamine-free. The order also applies to pet foods and some bulk protein products.

China’s tainted-milk problem came to light in September.

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Source: Associated Press