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Scientists said the work supports speculation that cold-chain foods act as a pathway for SARS-CoV-2 and might present a risk for virus transmission between countries and regions. They added handlers and processors of imported frozen foods should be effectively protected, monitored daily for symptoms of COVID-19, and tested for SARS-CoV-2 nucleic acid at regular intervals. Seven outbreaks and 689 cases were linked to imported cold-chain foods from June 2020 to mid-July 2021, according to the study in China CDC Weekly . Sampling findings Investigations of an outbreak at Xinfadi Market in Beijing June 2020 found five samples from salmon in...
