Abstract：Objective To analyze the epidemiological characteristics of a family aggregation of coronavirus disease 2019 (COVID-19) in district B of Tianjin municipality so as to provide a scientific basis for prevention and control of aggregation epidemics. Methods Field epidemiological methods were used to investigate cases and their close contacts, and real-timefluorescent quantitative RT-PCR was used for SARS-CoV-2 nucleic acid detection of the respiratory specimens collected. Results A total of 10 confirmed patients and 1 asymptomatic patient were found in this cluster epidemic, and they were mainly transmitted by close contact such as co-living and dining at the same table. Some of the cases appeared to be contagious before the onset, and there existed a phenomenon that multiple sampling and testing of nucleic acids were needed to confirm the case. Conclusions COVID-19 is a highly contagious condition that can spread within the family; and hence, it is necessary to strengthen the awareness of protection among family members and enhance the tracking and management of asymptomatic patients and prevention and control measures so as to avoid the occurrence and spread of family cluster epidemic.
张红杰, 邢雅素, 李永刚. 天津市B区一起家庭聚集性新型冠状病毒肺炎疫情调查分析[J]. 实用预防医学, 2020, 27(9): 1037-1039.
ZHANG Hong-jie, XING Ya-su, LI Yong-gang. Epidemic status of a family cluster of coronavirus disease 2019 in district B of Tianjin municipality. , 2020, 27(9): 1037-1039.
2020, Vol. 27 
