2020年1~2月山东省新型冠状病毒肺炎的流行病学特征

Epidemiological characteristics of COVID-19 in Shandong Province from January to February in 2020

目的总结2020年1~2月山东省内新型冠状病毒肺炎(COVID-19)的流行病学特征。方法收集2020年1月21日~2020年2月29日在山东省卫健委官网公布的COVID-19疫情信息及山东省各直辖市卫健委官网上公布的疫情信息,总结年龄、性别、流行病学暴露史、病死率、确诊时间线、确诊病例地区分布特点。结果山东省内共报告COVID-19确诊患者756例,死亡6例,粗病死率为0.79%。确诊患者中,有550例在山东省各直辖市卫健委官网上可查询到患者的信息,其中男308例(56.0%)、女242例(44.0%),男女发病比例为1.27∶1。有湖北暴露史181例(32.9%),有武汉暴露史156例(28.4%);输入患者213例(38.7%),本地患者337例(61.3%)。550例COVID-19确诊患者中2例年龄缺失,其余548例年龄20~69岁(86.1%)。COVID-19确诊时间线显示,在2月5日出现第一个发病增长高峰,此后发病数呈下降趋势,但在2月20日因济宁市任城区监狱出现聚集性感染,导致异常发病高峰出现,此后发病数再次呈下降趋势。截至2月29日除东营外,山东省15个地市均有COVID-19确诊患者。结论COVID-19疫情在山东省内波及面广,人群普遍易感,患者多集中在20~69岁,男性比例高于女性,以轻症为主,病死率低。COVID-19疫情在2月5日达到首个发病高峰,2月20日出现单日发病异常高值,而后逐渐下降。

Objective To learn the epidemiological characteristics of coronavirus disease 2019(COVID-19)in Shandong Province from January to February in 2020.Methods We collected the COVID-19 cases reported on the website from Health Commission of Shandong Provincial from January 21,2020 to February 29,2020,and the epidemic information published on the official websites of Health committees of municipalities in Shandong Province was analyzed retrospectively.The age distribution,sex ratio,epidemiological exposure history,fatality rate,epidemiological curve,spatial and temporal characteristics of disease transmission were summarized.Results Up to February 29,2020,756 confirmed cases and 6 deaths were reported in Shandong Province,with a rough case fatality rate of 0.79%.Among the confirmed cases,the information of 550 confirmed cases could be found on the official websites of the Health Committee of each municipality in Shandong Province.Among 550 cases,308 cases(56.0%)were males,and 242 cases(44.0%)were females.The ratio of male to female was 1.27∶1.Among the 550 cases,181 cases(32.9%)had a history of exposure in Hubei,156 cases(28.4%)had a history of exposure in Wuhan;213 cases(38.7%)were imported and 337 cases(61.3%)were local.Among the 550 cases,2 cases were age deficient,and the other 548 cases were mostly aged 20-69 years(86.1%).The epidemic curve showed that the first growth peak appeared on February 5,and the incidence decreased after that.However,on February 20,because of the clustering infection in Rencheng District prison of Jining City,the incidence increased again.Up to February 29,COVID-19 cases were found in fifty cities of Shandong Province except Dongying.Conclusions COVID-19 is widespread in Shandong Province,and the population is generally susceptible.Most of the cases are between 20-69 years old.The proportion of males is higher than that of females.The majority of the cases are mild,and the mortality rate is low.The epidemic reached its first epidemic peak on February 5,and on February 20,the single-day incidence was abnormally high,then gradually decreased,and later it entered the stage of low-level distribution.