| Autor: |
Zhang Y; Tianjin Centers for Diseases Control and Prevention, Tianjin 300011, China., Su X; Tianjin Centers for Diseases Control and Prevention, Tianjin 300011, China., Chen W; Tianjin Centers for Diseases Control and Prevention, Tianjin 300011, China., Fei CN; Tianjin Centers for Diseases Control and Prevention, Tianjin 300011, China., Guo LR; Tianjin Centers for Diseases Control and Prevention, Tianjin 300011, China., Wu XL; Tianjin Centers for Diseases Control and Prevention, Tianjin 300011, China., Zhou N; Tianjin Centers for Diseases Control and Prevention, Tianjin 300011, China., Guo YT; Tianjin Centers for Diseases Control and Prevention, Tianjin 300011, China., Dong XC; Tianjin Centers for Diseases Control and Prevention, Tianjin 300011, China., Zhao Y; Tianjin Centers for Diseases Control and Prevention, Tianjin 300011, China., Wang HW; Hedong District Center for Disease Control and Prevention, Tianjin 300151, China., Pan Y; Hebei District Center for Disease Control and Prevention, Tianjin 300150, China., Zuo LJ; Hebei District Center for Disease Control and Prevention, Tianjin 300150, China. |
| Abstrakt: |
Objective: To investigate and analysis the epidemiological characteristics of a cluster epidemic of COIVD-19 in a collective workplace in Tianjin, evduate the prevention and control measures based on limited evidence and experience in early period of COVID-19 epidemic. Methods: Descriptive research method was used to describe the distribution and other epidemiological characteristics of the cluster cases of COVID-19. Results: Since the onset of the first index case on January 15, ten confirmed COVID-19 cases had occurred in the workplace, and the epidemic had spread from the workplace to 4 families, infecting 7 family members. The median age of 17 cases was 55 (19-79) years. All the 10 employee cases were males, and in the family cases, 3 were males and 4 were females. Of the employee cases, 8 worked in CW workshop and 2 worked in administrative office building. The median exposure-onset interval of all the cases was 4 days, and the median exposure-onset interval was 4.5 days in the employee cases and 4 days in the family cases. The median onset-medical care seeking interval was 4 days in the non-isolated cases, 2.5 days in the cases with home isolation after onset, and 0.5 day in the cases with home isolation before onset. Conclusions: The clustering of COVID-19 cases was observed in this workplace in Tianjin, which affected 4 families. In the early stage of the epidemic, accurate and rapid blocking and control measures can completely prevent the large-scale spread of COVID-19. |
