The students had just been released last Thursday, after spending a week at a Beijing hotel in quarantine over H1N1 fears.

CNN: U.S. students face second quarantine in China

The Shanghai quarantine bureau said this week that Kraft cream cheese and 2.7 tons of Nestle chocolate bars also were among dozens of imported products destroyed in its latest round of quality inspections.

NPR: China Destroys Ikea Cake, Nestle Chocolate

The quarantine was imposed more than a week ago after the 25-year-old guest from Mexico tested positive for swine flu.

CNN: Hong Kong hotel guests freed from flu quarantine