Investigation of a family cluster of COVID-19 in a district of Shanghai in 2021
10.19428/j.cnki.sjpm.2022.21293
- VernacularTitle:2021年上海市某区1起新型冠状病毒肺炎家庭内传播疫情调查
- Author:
Shen CAO
1
;
Meng XIE
1
;
Zhiping XIAO
1
;
Zhengxi ZHANG
1
;
Xue HAN
1
Author Information
1. Yangpu District Center for Disease Control and Prevention， Shanghai 200090，China
- Publication Type:Journal Article
- Keywords:
COVID-19;
family aggregation;
epidemic;
Shanghai
- From:
Shanghai Journal of Preventive Medicine
2022;34(4):300-302
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo analyze the epidemiological characteristics of a family cluster of COVID-19 in a district of Shanghai， and to provide a scientific basis for prevention and control of cluster epidemic of COVID-19. MethodsField epidemiological survey was applied to study the cases and close contacts of a family cluster of COVID-19 in a district of Shanghai in 2021. Descriptive analysis of epidemiological survey data was conducted and real-time fluorescent quantification （RT-PCR） was used to detect new coronavirus nucleic acid for the collected specimens. ResultsCase A was the source of infection in the home aggregated epidemic. There were 2 second-generation cases infected in the whole incubation period. Case B and C were transmitted by case A through eating together. The PCR test results were negative both in the close contacts outside the family of primary contacts as well as in the close contacts to primary close contacts. ConclusionCOVID-19 is highly contagious and populations are generally susceptible. It is easy to cause family aggregated epidemic situation. Asymptomatic infection should be detected early and isolated. We should strengthen the tracking and management of close contacts of COVID-19 cases， and identify the second-generation cases as soon as possible.
