摘要
目的新型冠状病毒(SARS-CoV-2)Omicron变异株自2021年11月在南非首次发现以来迅速在全球传播,并且传播力和免疫逃逸能力增强的新亚型变异株不断涌现,对疫情防控提出更大的挑战。2022年6月以来,Omicron BA.5亚型变异株成为全球流行的优势变异株,并导致多国疫情反弹。我国大陆地区由Omicron BA.5亚型变异株输入并引发本土疫情的频率逐渐增加,疫情波及范围广,防控难度极大。本文对Omicron BA.5亚型变异株流行现状、流行病学特征和输入我国大陆地区的情况进行分析,为口岸防控Omicron BA.5亚型变异株输入提供科学依据。
Objective The SARS-CoV-2 Omicron variant has spread rapidly around the world since it was first discovered in South Africa in November 2021.New Omicron subvariants with enhanced transmissibility and immune escape ability continue to emerge,which poses greater challenges to epidemic prevention and control.Since June 2022,the Omicron subvariant BA.5 has become the predominant variant in the global epidemic and led to a rebound in the epidemic in several countries.The frequency of local transmission caused by Omicron subvariant BA.5 importation in China's Mainland has gradually increased,with a wide range of epidemics and great difficulties in prevention and control.This article analyzed the epidemic status,epidemiological characteristics of Omicron subvariant BA.5 and its importation in China's Mainland,and provides scientific basis for the prevention and control of Omicron subvariant BA.5 importation at Chinese border ports.
作者
张瑾
韩辉
伍波
贾娇娇
Zhang Jin;Han Hui;Wu Bo;Jia Jiaojiao(Qingdao International Travel Healthcare Center,Qingdao,Shandong,266071,China;Science and Technology Research Center of China Customs,Beijing 100026,China)
出处
《口岸卫生控制》
2022年第4期1-5,共5页
Port Health Control
基金
科技创新2030重大项目(2021ZD0114104)
海关总署科技项目(2021HK136)。
