The outer packaging of a pack of imported frozen pork tested positive for COVID-19, officials from Dezhou, East China's Shandong Province reported on Saturday. 

(File photo: AP)

Local authorities have activated a series of response measures, including sealing the product and the vehicles used to transport the contamintaed food, disinfecting the environment and putting all close contacts under qurantine. No one tested postive for the virus, authorities said in a statement.