Feng Zhaomin, Huo Da, Cui Shujuan, Lyu Bing, Liang Zhichao, Li Fu, Yang Peng, Wang Quanyi, Zhang Daitao, Pan Yang, Duan Wei
Beijing Center for Disease Prevention and Control, Beijing, China.
J Med Virol. 2023 Mar;95(3):e28613. doi: 10.1002/jmv.28613.
Different variants of severe acute respiratory syndrome coronavirus 2 have been discovered globally. At present, the Omicron variant has been extensively circulated worldwide. There have been several outbreaks of the Omicron variant in China. Here, we investigated the epidemiologic, genetic characteristics, and origin-tracing data of the outbreaks of COVID-19 in Beijing from January to September 2022. During this time, 19 outbreaks occurred in Beijing, with the infected cases ranging from 2 to 2230. Two concern variants were detected, with eight genotypes. Based on origin tracing analysis, two outbreaks were from the cold-chain transmission and three from items contaminated by humans. Imported cases have caused other outbreaks. Our study provided a detailed analysis of Beijing's outbreaks and valuable information to control the outbreak's spread.
全球已发现严重急性呼吸综合征冠状病毒2的不同变种。目前，奥密克戎变种已在全球广泛传播。中国已出现多起奥密克戎变种疫情。在此，我们调查了2022年1月至9月北京新冠疫情的流行病学、基因特征和溯源数据。在此期间，北京发生了19起疫情，感染病例从2例到2230例不等。检测到两种关注变种，有8种基因型。基于溯源分析，两起疫情来自冷链传播，三起来自人类污染物品。输入性病例引发了其他疫情。我们的研究对北京的疫情进行了详细分析，并为控制疫情传播提供了有价值的信息。
