Survey of possible aerosol transmission of a COVID-19 epidemic caused by 2019-nCoV Delta variant.
10.3760/cma.j.cn112338-20211208-00961
- Author:
Shuang Sheng WU
1
;
Jiao Jiao ZHANG
1
;
Ying SUN
1
;
Zheng Yong REN
1
;
Xiang Feng DOU
1
;
Li ZHANG
1
;
Wei DUAN
1
;
Chun Na MA
1
;
Peng YANG
2
;
Xing Huo PANG
3
Author Information
1. Institute for Infectious Disease and Endemic Disease Control, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine, Beijing 100013, China.
2. Office of Global Health Center, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine, Beijing 100013, China.
3. Central Office, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine, Beijing 100013, China.
- Publication Type:Journal Article
- MeSH:
Aerosols;
COVID-19;
Epidemics;
Humans;
SARS-CoV-2
- From:
Chinese Journal of Epidemiology
2022;43(3):305-309
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To investigate the epidemiological characteristics and the transmission chain of a family clustering of COVID-19 cases caused by severe acute respiratory 2019-nCoV Delta variant in Changping district of Beijing. Methods: Epidemiological investigation was conducted and big data were used to reveal the exposure history of the cases. Close contacts were screened according to the investigation results, and human and environmental samples were collected for nucleic acid tests. Positive samples were analyzed by gene sequencing. Results: On November 1, 2021, a total of 5 COVID-19 cases caused by 2019-nCoV Delta variant were reported in a family detected through active screening. The infection source was a person in the same designated isolation hotel where the first case of the family cluster was isolated from 22 to 27, October. The first case was possibly infected through aerosol particles in the ventilation duct system of the isolation hotel. After the isolation discharge on October 27, and the first case caused secondary infections of four family members while living together from October 27 to November 1, 2021. Conclusion: 2019-nCoV Delta variant is prone to cause family cluster, and close attention needs to be paid to virus transmission through ventilation duct system in isolation hotels.
