Investigation on a cluster epidemic of COVID-19 in District L of City Y, Hunan Province
LI Zuo-chao1, TAN Xia-lin1, HE Xin-guo1, JIANG Shi-zhao2, JIANG Yong-lin1, XU Shan-song2, LI Mou-yi1, CHEN Bo-zhong1
1. Yongzhou Municipal Center for Disease Control and Prevention, Yongzhou, Hunan 425000, China; 2. Lingling District Center for Disease Control and Prevention, Yongzhou, Hunan 425100, China
Abstract：Objective To investigate a cluster epidemic of COVID-19 in District L so as to provide a scientific basis for epidemic prevention and control. Methods Field epidemiological methods were used to investigate cases and close contacts. Material and data about the epidemiological investigation were descriptively analyzed. Real-time fluorescent RT-PCR was used to detect nucleic acid from the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in the pharyngeal swab specimens collected. Results One confirmed case and 4 asymptomatic carriers were found in this cluster epidemic. The sources of infection were asymptomatic carriers A and B who returned to hometown from Wuhan City, Hubei. The confirmed case C was infected by sharing the car or attending the meal with the asymptomatic carriers A and B. Cases D and E were infected by living with theasymptomatic carriers A and B in common life. Conclusions The SARS-CoV-2 is highly infectious, and asymptomatic carriers can be the source of infection. It is necessary to strengthen the detection and management of asymptomatic carriers.
李作超, 谭夏林, 贺新国, 蒋世钊, 蒋永林, 徐善松, 李谋壹, 陈伯中. 湖南省Y市L区一起聚集性新型冠状病毒肺炎疫情调查[J]. 实用预防医学, 2021, 28(3): 269-271.
LI Zuo-chao, TAN Xia-lin, HE Xin-guo, JIANG Shi-zhao, JIANG Yong-lin, XU Shan-song, LI Mou-yi, CHEN Bo-zhong. Investigation on a cluster epidemic of COVID-19 in District L of City Y, Hunan Province. , 2021, 28(3): 269-271.
2021, Vol. 28 
