目的了解青海省2009年流行性腮腺炎(流腮)的流行病学特征,为青海省预防控制流腮提供科学依据。方法采用描述性流行病学方法对流行性腮腺炎流行病学进行调查。结果青海省2009年共报告流腮1078例,无死亡病例,发病率为19.45/10万,发病率居丙类传染病第3位。病例主要集中在人口比较集中的西宁市和海东地区;以冬春夏季节为发病高峰,占病例总数的67.90%;发病年龄以6~19岁学生为主,占当年报告病例数的67.25%;2009年男性发病率显著高于女性,男、女发病数之比为1.40∶1.00。结论学生为流行性腮腺炎发病的高危人群,防治重点应放在人口比较密集的场所。 Objective To understand the epidemiological characteristics of mumps in Qinghai Province in 2009 and provide a scientific basis for prevention and control of mumps in Qinghai Province. Methods Descriptive epidemiology was used to investigate the epidemiology of mumps. Results In 2009, a total of 1078 cases of gills were reported in Qinghai Province without any deaths. The incidence rate was 19.45 / 100 000 and the incidence rate was the third in category C infectious diseases. The cases were mainly concentrated in Xining and Haidong areas, where the population was relatively concentrated. The peak incidence was in winter, spring and summer, accounting for 67.90% of the total number of cases. The age of onset was mainly students aged 6-19 years, accounting for 67.25% In 2009, the incidence of males was significantly higher than that of females. The ratio of males and females was 1.40: 1.00. Conclusions Students are at high risk of mumps. Prevention and treatment should be focused on places with dense population.