Research progress on epidemiological characteristics and influencing factors of the reinfection of COVID-19
The reinfection of COVID-19 is one of the key issues in the prevention and control of this disease.Systematically combing the current research progress on the incidence,epidemiological characteristics and influencing factors of the reinfection of COVID-19 is of great significance for improving and optimizing our national prevention and control strategies.As of February 15,2023,relevant literatures about the reinfection of COVID-19 from PubMed,Embase,Cochrane Library,CNKI,VIP and Wanfang databases showed that the rate of COVID-19 reinfection was 2%-7%.Most studies had shown a decrease in the severity of reinfections,and the reinfection of COVID-19 was mainly related to epidemic strains,vaccination,gender,age and basic diseases.