广州市白云区新型冠状病毒肺炎国内本地疫情阶段流行病学特征分析

目的 掌握新型冠状病毒(新冠)肺炎国内本地疫情阶段广州市白云区疫情流行病学特征.方法 从中国疾控中心传染病信息系统及病例流行病学调查资料获取白云区截至2020年2月29日的新冠病例疾病报告和流行病学信息进行分析.结果 国内本地疫情阶段白云区累计报告新冠病例74例.首例报告于1月21日,报告数高峰在1月29日,末例报告于...

Epidemiological characteristics of domestic epidemic of COVID-19 in Baiyun District,Guangzhou

Objective To summarize the epidemiological characteristics of domestic epidemic of COVID-19 in Baiyun District, Guangzhou. Methods Information of COVID-19 cases reported in Baiyun District, Guangzhou by February 29, 2020 were extracted from Infectious Disease Information System of Chinese CDC and the case epidemiological investigation data. Demographic characteristics and epidemiological characteristics of the cases were analyzed and described. Results A total of 74 COVID-19 cases had been reported in Baiyun District during the epidemic period. The first COVID-19 case was reported on January 21 and the last was reported on February 12. Epidemic curve of the case report peaked on January 29. The cases were distributed in 14 streets/towns, with a median age of 50 （33, 64） years, mainly female （58.1%, 43/74） and domestic/unemployed/retired （63.5%, 47/74）, and the proportion of severe/critical cases was 9.5% （7/74）. The source of infection was mainly related to the history of exposure in Hubei （89.2%, 66/74）, involving 18 clusters of outbreaks, resulting in 392 close contacts and 4.3% （17/392） of close contacts who subsequently tested positive for nucleic acid. Conclusion The domestic epidemic in Baiyun District continues for 23 days, the COVID-19 cases are mainly middle/elder aged and female, most infection are related to Hubei. We still need to prevent for the possible rebound of the epidemic caused by imported cases.