Epidemiological investigation and analysis of a cluster epidemic of COVID-19 on campus in 2022
Journal Title: Shanghai Journal of Preventive Medicine - Year 2023, Vol 35, Issue 8
Abstract
ObjectiveTo characterize a cluster epidemic of coronavirus disease 2019 ï¼COVID-19ï¼on campus in Baotou city and provide evidence for the prevention and control of COVID-19 in universities.MethodsField epidemiological investigation was conducted to determine the confirmed cases and close contacts in the cluster epidemic of COVID-19 in a university of western China in 2022. Descriptive analysis was utilized to illustrate the epidemic timeline and schematic diagram. Real-time quantitative fluorescent PCRï¼RT-PCRï¼ was used to detect the nucleic acid of SARS-CoV-2 in the collected samples.ResultsA total of eight students were infected in the cluster epidemic on campusï¼ including 2 confirmed cases and 6 asymptomatic cases. Case A1 infected other 7 students in the same dormitory or on the same floor by close contact. After a 10-day quarantine and medical observationï¼ no further case was reported. The overall incidence rate was 1.22% and the incidence rate among close contacts was 2.24%.ConclusionThis cluster epidemic of COVID-19 is characterized by strong and fast transmission. Repeated contact with no personal protection in confined space is highly vulnerable to cluster epidemic. Prevention of cluster epidemics on campus remains crucial to contain the epidemic. Thereforeï¼ it is necessary to strengthen the management of campus containmentï¼ interrupt the transmission routeï¼ identify close contacts and implement quarantine management as early as possible to avoid the cluster epidemics on campus.
Authors and Affiliations
WANG Qi,LIU Dan,QIAO Tingju,SUN Xuesong,WAN Hanbing,LIU Zhengran,BAI Gang,
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