The warning comes after a sample was taken from frozen chicken wings that had arrived in the city from Brazil. The wings were reportedly contaminated by coronavirus.
Other samples from the packaging of frozen shrimp from Ecuador sold in Xian also tested positive for the virus, local authorities said. Related story: Sydney wedding sparks outrage over no social distancing This new development has led China to increase screenings at ports and start contact tracing, but all cases have been negative so far, authorities revealed.
The announcement will spark fears the virus could spread on frozen food products after speculation the corona virus can survive in cold temperatures.