黑龙江省2018—2019年度流感监测工作质量评估

Quality assessment of influenza surveillance in Heilongjiang,2018—2019

目的为进一步提升黑龙江省流感监测水平,对全省2018—2019年度流感监测工作进行质量评估。方法从中国流感监测信息系统和突发公共卫生事件管理信息系统下载数据,根据《黑龙江省流感监测质量评估方案(2017年版)》对各网络实验室和哨点医院数据进行统计分析,计数资料组间的比较采用χ^2检验。结果2016—2019年度黑龙江省ILI百分比分别为2.07%、1.99%和1.50%,差异有统计学意义(P<0.05);对采集的13870例标本进行核酸检测,阳性1789例,阳性率为12.90%,以新甲H1亚型流行为主,全省生成流感毒株901株;共有5起流感暴发疫情,全部发生在中小学;省级流感参比中心按时对报送的所有毒株进行复核,并对88株流感毒株进行抗原性分析,32株流感毒株进行耐药性分析,81株流感毒株进行全基因组测序;所有网络实验室标本检测及时性、生成毒株数、毒株送检及时性均为满分,并且都能够开展鸡胚病毒分离工作;哨点医院在ILI病例报告及时性、采样均衡性、送检及时性等方面都有显著提高,全年无缺报和漏报数据。结论黑龙江省流感监测工作取得很大进步,但仍需加强哨点医院流感病例的数据统计、报告及时性和网络实验室鸡胚病毒分离等工作。

Objective To evaluate the quality of influenza surveillance in Heilongjiang from 2018 to 2019,with a view to further enhancing the level of influenza surveillance.Methods The data were downloaded from the China Influenza Surveillance Information System and China Public Health Emergency Management Information System,the data from laboratories and sentinel hospitals were analyzed according to the standards of the Heilongjiang Influenza surveillance quality assessment programme(2017 edition),categorical variables comparison was performed by Chi-square test.Results The ILI%were 2.07%,1.99%and 1.5%in Heilongjiang from 2016 to 2019,the difference was statistically significant(P<0.05);1789 samples were positive of 13870 samples,the positive rate was 12.90%,H1 N1(09 pdm)was the predominant subtype.There were 901 influenza strains in the province;a total of 5 influenza-like illness outbreaks in the school were reported.Provincial influenza reference center rechecked all the virus strains on time,antigenicity of 88 influenza strains were analyzed,drug resistance of 32 influenza strains were analyzed and completed genome sequences analysis of 81 influenza strains.The timeliness of specimen detection,the number of virus strains and the timeliness of virus strains sent to the Chinese National fluenza Center were all given full marks.All laboratories were able to isolate viruses from chicken embryos.The timeliness of ILI case report,sampling balance and the timeliness of sending examination had been improved significantly in sentinel hospitals.There were no underreporting and incomplete data all the year.Conclusion Heilongjiang had made great progress in influenza surveillance,it needed to be strengthened in ILI case data statistics,timely reporting in sentinel hospitals,chicken embryo virus isolation in laboratories.