Household transmission of SARS-CoV-2 during the Omicron wave in Shanghai, China: A case-ascertained study.

Zhongqiu Wei,Wenjie Ma,Zhonglin Wang,Jingjing Li,Xiaomin Fu,Hailing Chang,Yue Qiu,He Tian,Yanfeng Zhu,Aimei Xia,Qianhui Wu,Gongbao Liu,Xiaowen Zhai,Xiaobo Zhang,Yan Wang,Mei Zeng

Influenza and other respiratory viruses（2023）

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摘要

We found high household transmission during the Omicron wave in Shanghai due to presymptomatic and asymptomatic transmission despite implementation of strict interventions, indicating the importance of early detection and timely isolation of SARS-CoV-2 infections. Marginal effectiveness of inactivated vaccines against Omicron infection poses a great challenge for outbreak containment.

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关键词

Omicron variant,SARS-CoV-2,household transmission,vaccine effectiveness

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