News Release

Cold-chain transportation in the frozen food industry may have caused a recurrence of COVID-19 cases in destination

Peer-Reviewed Publication

Compuscript Ltd

Figure 1

image: Probable route of transmission for SARS-CoV-2 through cold-chain transportation in the frozen food industry. Frozen food and outer package were contaminated with SARS-CoV-2 during processing and packaging. Through cold-chain transportation with low temperature (such as -20°C), SARS-CoV-2 survived and then infected stevedores or peddlers after reaching the destination. view more 

Credit: Biosafety and Health

In September 2020, during the routine nucleic acid inspection of the personnel in Qingdao Port, China, two stevedores were found to be SARS-CoV-2 positive and were identified as asymptomatic infection. The Qingdao Center for Disease Control and Prevention conducted an epidemiological investigation to identify the source of infection. Both cases had no COVID-19 case contact history and no foreign personnel contact history, however, both carried out loading and unloading of frozen cod on a particular date in September 2020. In this outbreak in Qingdao, the authors of this article directly isolated SARS-CoV-2 from cod outer package's surface swab samples in a first-time event which demonstrates that frozen food transportation can import SARS-CoV-2 virus.


Keywords: COVID-19, SARS-CoV-2, Cod outer package, Frozen food

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Biosafety and Health is sponsored by the Chinese Medical Association, managed by National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC).

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CiteScore: 3.8


ISSN 2590-0536

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