Seventeen people fell ill after they consume beef sold by an unlicensed butcher in central China's Hunan province.
The incident took place Thursday in Zhuzhou city's Tianyuan district, Xinhua reported.
The hospitalized patients were still under observation but none of the cases were critical, the government said.
"Neither the cattle nor the beef underwent quarantine checks. Nor was the seller authorized by market regulators to sell the beef," officials said.
The people felt nauseous after eating the beef Thursday night, but health authorities have ruled out the possibility of animal-borne diseases through lab tests.