{"title":"Epidemiological Analysis and Effective Control of COVID-19 Outbreaks Caused by the Omicron Subvariant BA.2 in a Medium-sized City in China, 2022","authors":"Zhu Yang, Jinhong Zhao, Shuzhi Zhong, Yikun Wu, Bingjie Ye, Yiming Wang, Minmin Xiao","doi":"10.5812/jjm-136649","DOIUrl":null,"url":null,"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.","PeriodicalId":17803,"journal":{"name":"Jundishapur Journal of Microbiology","volume":null,"pages":null},"PeriodicalIF":0.5000,"publicationDate":"2023-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Jundishapur Journal of Microbiology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.5812/jjm-136649","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MICROBIOLOGY","Score":null,"Total":0}
引用次数: 0
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.
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.