新发地疫情或源自冷链
Virus may spread by cold food Chinese scientists have discovered that the COVID-19 outbreak in Beijing in June was likely to have been triggered by cold-chain imports from overseas. The study was published online on Friday in China's peer-reviewed journal, the National Science Review. A new cluster of local infections linked to the massive Xinfadi wholesale market in Beijing's Fengtai district emerged on June 11 after the capital reported no new local cases for 56 consecutive days. The outbreak, which prompted a mass testing campaign covering about half of the over 20 million residents of the capital, saw 335 confirmed cases. |