The Associated Factors of SARS-CoV-2 Reinfection by Omicron Variant—Guangdong Province,China,December 2022 to January 2023

作     者：Chunsheng Cai Yihong Li Ting Hu Rongwei Liang Kaibin Wang Congrui Guo Yan Li Meng Zhang Min Kang 

作者机构：Guangdong Field Epidemiology Training ProgramGuangzhou CityGuangdong ProvinceChina Zhongshan Center for Disease Control and PreventionZhongshan CityGuangdong ProvinceChina Guangdong Provincial Center for Disease Control and PreventionGuangzhou CityGuangdong ProvinceChina Huaiji County Center for Disease Control and PreventionZhaoqing CityGuangdong ProvinceChina Tianhe District Center for Disease Control and PreventionGuangzhou CityGuangdong ProvinceChina Futian District Center for Disease Control and PreventionShenzhen CityGuangdong ProvinceChina 

出 版 物：《China CDC weekly》 (中国疾病预防控制中心周报（英文）)

年 卷 期：2023年第5卷第18期

页      面：391-396页

核心收录：

学科分类：1002[医学-临床医学] 100201[医学-内科学(含：心血管病、血液病、呼吸系病、消化系病、内分泌与代谢病、肾病、风湿病、传染病)] 10[医学] 

基　　金：Supported by the Key-Area Research and Development Program of Guangdong Province(2022B1111020006) the Natural Science Foundation of China(82341034) 

主　　题：policy Guangdong conducting 

摘      要：Summary What is already known about this topic?Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)reinfection by variants is being reported commonly and has caused waves of epidemic in many *** of dynamic zero policy,the SARSCoV-2 reinfection was less reported in *** is added by this report?SARS-CoV-2 reinfections were observed in Guangdong Province between December 2022 and January *** study estimated that the reinfection incidence was 50.0%for the original strain primary infections,35.2%for the Alpha or Delta variants,and 18.4%for the Omicron variant;The reinfection incidence within 3-6 months after primary infection by Omicron variant was 4.0%.Besides,96.2%reinfection cases were symptomatic while only 7.7%sought medical *** are the implications for public health practice?These findings suggest a reduced likelihood of an Omicron-driven epidemic resurgence in the short term but emphasize the importance of maintaining vigilant surveillance of emerging SARS-CoV-2 variants and conducting population-based antibody level surveys to inform response preparedness.