China researchers seek study on spread of Covid via cold chains

File photo of disease control and prevention workers collect samples from frozen products in Tianjin's Nankai district on Nov 9, 2020.- China Daily

BEIJING (China Daily/Asia News Network): Chinese researchers are calling for global cooperation to improve understanding of the spread of SARS-CoV-2 via cold chains as part of efforts to trace the origins of the virus.

The first phase of WHO-organised studies into the origins of the virus that causes Covid-19 wrapped up in China in February and identified the cold-chain theory as a possible explanation for its spread across populations.