Epidemiological and clinical characteristics of COVID-19 in southern Liaoning Province in 2020

Objective To explore epidemiological and clinical characteristics of corona virus disease 2019(COVID-19) in southern Liaoning Province aiming for its pathogenesis and providing evidence to support and optimize the diagnosis, treatment and prevention. Methods A retrospective analysis was performed by collecting the case information, case history and clinical indicators in 24 hours of admission including asymptomatic and mild/moderate type confirmed cases from February 2020 to January 2021 in southern Liaoning Province. The epidemiological characteristics were studied by descriptive analysis.The clinical characteristics of asymptomatic infection group and mild/moderate infection group were compared by t test, Mann-Whitney U test or pearson χ2 test. The differential indexes were included in the binary Logistic regression model for further analysis. Results In 218 cases of COVID-19, 59 were asymptomatic(27.06%) and 159 were mild/moderate(72.94%). The ratio of males to females was 0.79∶1.00. Among all the patients