Effectiveness of the booster dose of inactivated COVID-19 vaccine against Omicron BA.5 infection: a matched cohort study of adult close contacts

• Published in: Respiratory research Vol. 24; no. 1; pp. 1 - 13
• Main Authors: Zeng, Ting, Lu, Yaoqin, Zhao, Yanji, Guo, Zihao, Sun, Shengzhi, Teng, Zhidong, Tian, Maozai, Wang, Jun, Li, Shulin, Fan, Xucheng, Wang, Weiming, Cai, Yongli, Liao, Gengze, Liang, Xiao, He, Daihai, Wang, Kai, Zhao, Shi
• Format: Journal Article
• Language: English
• Published: London BioMed Central Ltd 12.10.2023; BioMed Central; BMC
• Subjects: Adults; Asymptomatic; Asymptomatic infection; Cohort analysis; Contact tracing; COVID-19; COVID-19 vaccines; Deactivation; Disease control; Disease transmission; Effectiveness; Epidemics; Epidemiology; Genetic diversity; Genetic variance; Health risks; Infections; Matching; Omicron variant; Pandemics; Polymerase chain reaction; Public health; Regression analysis; Regression models; Severe acute respiratory syndrome coronavirus 2; Sex; Subgroups; Time lag; Vaccine effectiveness; Vaccine efficacy; Vaccines; Viral diseases; Young adults; China; Xinjiang Uighur Autonomous Region China

Background Although COVID-19 vaccines and their booster regimens protect against symptomatic infections and severe outcomes, there is limited evidence about their protection against asymptomatic and symptomatic infections in real-world settings, particularly when considering that the majority of SAR...