W S Wu1, Y G Li2, Z F Wei1, P H Zhou1, L K Lyu3, G P Zhang1, Y Zhao1, H Y He1, X Y Li3, L Gao1, X M Zhang1, H Liu1, N Zhou1, Y Guo1, X M Zhang1, D Zhang1, J Liu1, Y Zhang1. 1. Epidemiology Working Group for COVID-19, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China. 2. Baodi District Center for Disease Control and Prevention, Tianjin 301800, China. 3. Experimental Detection Group for COVID-19, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China.
Abstract
Objective: To describe the epidemiological characteristics of a cluster of COVID-19 cases reported in Baodi district of Tianjin as of 18 February, 2020, which might be associated with the exposure in a local department store, and provide suggestions for prevention and control strategy development. Methods: The basic characteristics, time and area distributions, clinical manifestations, epidemiological history and transmission mode of the COVID-19 cases associated with the department store exposure were analyzed. Results: A total of 40 COVID-19 cases were associated with the department store exposure, accounting for 75.47% of the total confirmed cases (53 cases) reported in Baodi district. The cases were mainly at the age of 60 years or older (35.00%) and farmers (40.00%). The main clinical manifestations included fever (95.00%), cough (35.00%), and diarrhea (15.00%). The proportion of confirmed severe cases was 32.50%. The incidence curve showed that the incidence peak occurred on 31 January, 2020. Among the 40 cases, 6(15.00%) were department store employees, 19 (47.50%) were customers and 15 (37.50%) were close contacts (secondary cases). The first case occurred on 21 January, 2020, this case was a department store employee who had a purchasing history at whole sale markets in other provinces and cities before the onset, and 3 employees were still on duty after symptom onsets. The median of the incubation period of customer cases was 6 days, and the median of the interval between onset and medical treatment of customer cases was 7 days. Conclusion: This was a cluster epidemic of COVID-19, which might be associated with the exposure in the department store. By now, the current prevention and control measures have achieved satisfied effects.
Objective: To describe the epidemiological characteristics of a cluster of COVID-19 cases reported in Baodi district of Tianjin as of 18 February, 2020, which might be associated with the exposure in a local department store, and provide suggestions for prevention and control strategy development. Methods: The basic characteristics, time and area distributions, clinical manifestations, epidemiological history and transmission mode of the COVID-19 cases associated with the department store exposure were analyzed. Results: A total of 40 COVID-19 cases were associated with the department store exposure, accounting for 75.47% of the total confirmed cases (53 cases) reported in Baodi district. The cases were mainly at the age of 60 years or older (35.00%) and farmers (40.00%). The main clinical manifestations included fever (95.00%), cough (35.00%), and diarrhea (15.00%). The proportion of confirmed severe cases was 32.50%. The incidence curve showed that the incidence peak occurred on 31 January, 2020. Among the 40 cases, 6(15.00%) were department store employees, 19 (47.50%) were customers and 15 (37.50%) were close contacts (secondary cases). The first case occurred on 21 January, 2020, this case was a department store employee who had a purchasing history at whole sale markets in other provinces and cities before the onset, and 3 employees were still on duty after symptom onsets. The median of the incubation period of customer cases was 6 days, and the median of the interval between onset and medical treatment of customer cases was 7 days. Conclusion: This was a cluster epidemic of COVID-19, which might be associated with the exposure in the department store. By now, the current prevention and control measures have achieved satisfied effects.
Authors: Ka Shing Cheung; Ivan F N Hung; Pierre P Y Chan; K C Lung; Eugene Tso; Raymond Liu; Y Y Ng; Man Y Chu; Tom W H Chung; Anthony Raymond Tam; Cyril C Y Yip; Kit-Hang Leung; Agnes Yim-Fong Fung; Ricky R Zhang; Yansheng Lin; Ho Ming Cheng; Anna J X Zhang; Kelvin K W To; Kwok-H Chan; Kwok-Y Yuen; Wai K Leung Journal: Gastroenterology Date: 2020-04-03 Impact factor: 22.682
Authors: J A Quesada; A López-Pineda; V F Gil-Guillén; J M Arriero-Marín; F Gutiérrez; C Carratala-Munuera Journal: Rev Clin Esp (Barc) Date: 2020-11-28
Authors: J A Quesada; A López-Pineda; V F Gil-Guillén; J M Arriero-Marín; F Gutiérrez; C Carratala-Munuera Journal: Rev Clin Esp (Barc) Date: 2020-10-01