云浮市2004～2005年流行性感冒监测结果分析

Analysis of Influenza Surveillance in Yunfu City from 2004 to 2005

目的探讨云浮市流感的流行特征及掌握病毒毒株变异情况,为制定流感防控策略提供有力的科学依据。方法通过云浮市流感监测网络系统,对流感作流行病学、病原学监测,并严密监控云浮市各地流感暴发情况。结果2004～2005年监测医院上报流感样病例14655例,占监测医院内科门诊(或儿科门诊、发热门诊)病例的3.60%,病例以少年儿童为主,占86.48%,全年均有病例发生,冬春季病例较多;两年共分离到106株流感病毒毒株,有甲3(H3N2)、甲1(H1N1)亚型和B型,病毒毒株以甲3(H3N2)为优势株;暴发疫情五起,均发生在中、小学校,四起由甲3(H3N2)亚型病毒毒株引起,一起由B型毒株引起。结论云浮市2004年和2005年的流感发病相对平静,未发生较大规模的暴发流行,病毒毒株未发现有明显的变异,建议继续加强流感监测网络建设,建立流感早期预警系统。

Objective To analyze the epidemic characteristics of influenza infection in Yunfu city , and provide scientific basis for making prevention and control measures. Methods Yunfu city influenza infection was monitored through the network system, for the influenza epidemiology, occurrence and outbreaks. Results 2004 and 2005 cases monitoring hospitals reported 14 655 influenza or influenza like cases were reported in 2004-05, accounting for 3.60% of the hospital outpatient cases （pediatric outpatients and fever outpatients）, mainly of children （86.48%）. Cases occurred through out the year but with more cases in spring and winter. A total of 106 isolates were obtained in these two years, mainlyA3 （H3N2）, A1 （H1N1） virus and B. A3 （H3N2） was predominant. Five outbreaks were occurred in primary and secondary schools. Four were caused by A3 （H3N2） and one by influenza B. Conclusion Yunfu city in 2004 and 2005 the incidence of influenza relatively few and without large outbreak. We should continue to strengthen the influenza surveillance and to setup an early influenza alert system.