Epidemiological characteristics of SARS-CoV-2 infection outbreak in Shanghai in the Spring of 2022

ObjectiveTo investigate the epidemiological characteristics and analyze the incidence trend of SARS-CoV-2 infection in Shanghai， China， and compare with the characteristics of the infection in Jilin Province of China during the same period in 2022 and Wuhan at the beginning of 2020.MethodsInformatio...

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Published inShanghai Yufang Yixue Vol. 34; no. 4; pp. 294 - 299
Main Authors XIAN Linfeng, LIN Jiansheng, YU Shichong, ZHAO Yue, ZHAO Pei, CAO Guangwen
Format Journal Article
LanguageChinese
Published Shanghai Preventive Medicine Association 01.04.2022
Subjects
asymptomatic carrier
confirmed covid-19 case
dynamic trend
outbreak
sars-cov-2
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Summary:ObjectiveTo investigate the epidemiological characteristics and analyze the incidence trend of SARS-CoV-2 infection in Shanghai， China， and compare with the characteristics of the infection in Jilin Province of China during the same period in 2022 and Wuhan at the beginning of 2020.MethodsInformation of new locally-transmitted confirmed SARS-CoV-2 cases， imported confirmed COVID-19 cases， local asymptomatic SARS-CoV-2 carriers and imported asymptomatic SARS-CoV-2 carriers in Shanghai from March 1 to April 18， 2022 was collected for descriptive analysis.ResultsFrom March 1 to April 18， 2022， a total of 397 933 locally-transmitted SARS-CoV-2 cases were reported in Shanghai. Of those， 27 613 were clinically confirmed cases and 21 were severe cases. Ten deaths were related to COVID-19. The pathogen is Omicron variant BA.2 of SARS-CoV-2. The number of the infected subjects increased rapidly after March 24 and lead to a disease outbreak. Severe and deceased cases had severe comorbidity and were mostly unvaccinated
ISSN:1004-9231
DOI:10.19428/j.cnki.sjpm.2022.22058