Epidemiological Analysis and Effective Control of COVID-19 Outbreaks Caused by the Omicron Subvariant BA.2 in a Medium-sized City in China, 2022

IF 0.5 4区 医学 Q4 MICROBIOLOGY Jundishapur Journal of Microbiology Pub Date : 2023-06-13 DOI:10.5812/jjm-136649
Zhu Yang, Jinhong Zhao, Shuzhi Zhong, Yikun Wu, Bingjie Ye, Yiming Wang, Minmin Xiao
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Abstract

Background: More and more variants of concern (VOCs) of SARS-CoV-2 continued to emerge in different regions worldwide. Objectives: Studies on COVID-19 outbreaks caused by different VOCs are critical for understanding their infections in humans in different regions. Methods: In this descriptive study, the individual information of 64 confirmed COVID-19 cases reported between March 3 and April 26, 2022, was collected, and the epidemiological features were analyzed. Results: We found COVID-19 epidemic caused by Omicron subvariant BA.2 in 2022 had unique characteristics compared to the earliest COVID-19 outbreaks in 2020 in Wuhu city. First, the geographic distribution of COVID-19 cases was highly concentrated, and most infections (58/64, 90.62%) were identified in one district in this study. Second, the mean age of COVID-19 cases in this study was 39.57 ± 16.39 years old, which was younger than the COVID-19 cases identified in Wuhan and Wuhu cities in 2020. Third, the spanned period of the COVID-19 outbreak in this study was shorter than the COVID-19 outbreak in 2020 in Wuhu city (13 days vs. 34 days). Conclusions: This study illustrates the epidemic of COVID-19 in Wuhu city from March to April 2022, and our result provides valuable information about COVID-19 outbreak caused by omicron subvariant BA.2. It also provides insights into developing effective strategies, such as high coverage of COVID-19 vaccination, lockdown policies, Ankang code, and population-bases COVID-19 screening, for successfully controlling the potential outbreaks caused by Omicron or future novel variants of SARS-CoV-2 in the medium-sized city like Wuhu.
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2022年中国某中等城市基因组亚变异BA.2致新冠肺炎疫情流行病学分析及有效控制
背景:越来越多的严重急性呼吸系统综合征冠状病毒2型变异毒株(VOCs)继续在全球不同地区出现。目的:研究不同VOCs引起的新冠肺炎疫情对于了解不同地区人类感染VOCs至关重要。方法:收集2022年3月3日至4月26日报告的64例新冠肺炎确诊病例的个体信息,分析其流行病学特征。结果:我们发现,与2020年芜湖市最早的新冠肺炎疫情相比,2022年由奥密克戎变异株BA.2引起的新冠肺炎疫情具有独特的特征。首先,新冠肺炎病例的地理分布高度集中,在本研究中,大多数感染(58/64,90.62%)被确定在一个地区。第二,本研究中新冠肺炎病例的平均年龄为39.57±16.39岁,比2020年武汉和芜湖发现的新冠肺炎病例年轻。第三,本研究中新冠肺炎疫情的持续时间短于2020年芜湖市新冠肺炎疫情(13天对34天)。结论:本研究揭示了2022年3-4月新冠肺炎在芜湖市的流行情况,我们的研究结果为奥密克戎亚变异株BA.2引起的新冠肺炎疫情提供了有价值的信息。它还为制定有效策略提供了见解,如新冠肺炎疫苗接种的高覆盖率、封锁政策、安康编码和基于人群的新冠肺炎筛查,以成功控制奥密克戎或未来新冠肺炎新变种在芜湖等中等城市引起的潜在疫情。
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来源期刊
CiteScore
1.30
自引率
0.00%
发文量
56
审稿时长
6-12 weeks
期刊介绍: Jundishapur Journal of Microbiology, (JJM) is the official scientific Monthly publication of Ahvaz Jundishapur University of Medical Sciences. JJM is dedicated to the publication of manuscripts on topics concerning all aspects of microbiology. The topics include medical, veterinary and environmental microbiology, molecular investigations and infectious diseases. Aspects of immunology and epidemiology of infectious diseases are also considered.
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