FOUR cold storage enterprise workers in the city of Dalian, Northeast China’s Liaoning Province, have tested positive for COVID-19, local authorities said yesterday.

The asymptomatic cases were detected when workers with the Dalian Port Yidu Cold Chain Co. Ltd. were undergoing regular nucleic acid testing Tuesday, according to the municipal COVID-19 prevention and control headquarters.

Upon receiving the report, the Dalian headquarters immediately launched an emergency response, carrying out epidemiological investigation and tracing close contacts. All cold-chain goods at the port have been sealed. The batch of goods has not been distributed.

In another development, an imported frozen food sample in the city of Wuxi, East China’s Jiangsu Province, tested positive for the virus, local authorities said Tuesday.

The sample was taken from a batch of frozen sliced pig ears imported from the United States as part of a regular screening before the entry of any imported frozen food into the city’s cold storage warehouse, according to the city’s epidemic prevention and control office.

(Xinhua)