[Epidemiological characteristics of confirmed COVID-19 cases in Tianjin] [NOVEL CORONAVIRUS THAT RECENTLY EMERGED IN CHINA]

Objective: To investigate the clinical and epidemiological characteristics of 135 confirmed cases of COVID-19 in Tianjin Methods: The clinical and epidemiological data of 135 cases of COVID-19 in Tianjin were collected, and the data were analyzed with descriptive method The factors influencing the severity of the illness were analyzed Results: Among the 135 COVID-19 cases, 72 were males and 63 were females, the age of the cases was (48 62±16 83) years, and the case fatality rate was 2 22% Local transmission caused 74 81% of the cases A total of 33 clusters occurred, involving 85 92% of all COVID-19 cases The median of the incubation period of COVID-19 was 6 50 days, the average generation interval was 5 days, and the household secondary transmission rate was 20 46% Fever was the main symptom (78 63%), followed by cough (56 48%) Multivariate regression analysis indicated that age (OR=1 038, 95%CI: 1 010-1 167) and the number of chronic underlying diseases (OR=1 709, 95%CI: 1 052-2 777) were the risk factors of severe illness Conclusions: Fever was the main symptom at the early phase of COVID-19 in Tianjin, and the local cluster cases accounted for high proportion in confirmed COVID-19 cases reported in Tianjin Severe illness was prone to occur in people with old age and multi underlying diseases Strict isolation of close contacts and intensive care of high-risk groups are the main measures to reduce the morbidity and case fatality of COVID-19