北京一家受污染的批发食品超市引发的与食品贸易相关的新冠疫情。
Food-trade-associated COVID-19 outbreak from a contaminated wholesale food supermarket in Beijing.
作者信息
Lu Shan, Wang Weijia, Cheng Yanpeng, Yang Caixin, Jiao Yifan, Xu Mingchao, Bai Yibo, Yang Jing, Song Hongbin, Wang Ligui, Wang Jiaojiao, Rong Bing, Xu Jianguo
机构信息
State Key Laboratory of Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, PR China.
Shanghai Public Health Clinical Center, Shanghai Institute for Emerging and Re-emerging Infectious Diseases, Shanghai, PR China.
出版信息
J Biosaf Biosecur. 2021 Jun;3(1):58-65. doi: 10.1016/j.jobb.2021.04.002. Epub 2021 Jun 26.
The re-emerging outbreak of COVID-19 in Beijing, China, in the summer of 2020 originated from a SARS-CoV-2-infested wholesale food supermarket. We postulated that the Xinfadi market outbreak has links with food-trade activities. Our Susceptible to the disease, Infectious, and Recovered coupled Agent Based Modelling (SIR-ABM) analysis for studying the diffusion of SARS-CoV-2 particles suggested that the trade-distancing strategy effectively reduces the reproduction number (R0). The retail shop closure strategy reduced the number of visitors to the market by nearly half. In addition, the buy-local policy option reduced the infection by more than 70% in total. Therefore, retail closures and buy-local policies could serve as significantly effective strategies that have the potential to reduce the size of the outbreak and prevent probable outbreaks in the future.
2020年夏天在中国北京再次出现的新冠疫情爆发源自一家被严重急性呼吸综合征冠状病毒2（SARS-CoV-2）感染的批发食品超市。我们推测新发地市场的疫情爆发与食品贸易活动有关。我们用于研究SARS-CoV-2颗粒传播的易感、感染和康复耦合基于主体的模型（SIR-ABM）分析表明，贸易距离策略有效地降低了再生数（R0）。零售店关闭策略使市场访客数量减少了近一半。此外，购买本地产品的政策选择总共减少了70%以上的感染。因此，零售店关闭和购买本地产品政策可能是非常有效的策略，有潜力减少疫情爆发规模并预防未来可能出现的疫情。
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