2010—2013年浙江省台州市监测哨点医院流行性感冒流行特征分析

目的了解浙江省台州市2010—2013年流行性感冒(流感)流行趋势及其病原学变化特点,为本地区防控流感提供参考依据。方法收集2010—2013年台州市流感监测哨点医院流感样病例(ILI)监测资料和流感网络实验室病原学监测结果资料,进行综合分析。结果 2010—2013年台州市流感流行大致呈1—3月、6—8月和11—12月三峰型,平均ILI就诊百分比(ILI%)为3.42%;ILI以15岁以下少年和儿童为主,占76.86%,构成比逐年上升。优势流感病毒2010年为B型;2011年为新型H1和B型流感病毒;2012年为H3型和B型流感病毒,2013年为新型H1。结论台州市流感流行呈现春、夏、冬三峰型,ILI的高峰与流感病毒检测阳性情况基本一致;暴发疫情主要发生在学校;H3型、新型H1型、B型流感病毒交替成为年检测、分离优势病毒。

Surveillance for influenza in Taizhou,Zhejiang,2010-2013

Objective To understand the epidemiological characteristics of influenza in Taizhou,Zhejiang province,from 2010 to 2013. Methods The surveillance data of influenza like illness（ ILI） w ere collected from sentinel hospitals in Taizhou from January 2010 to December 2013. Results The surveillance data indicated that the annual incidence peaks of influenza occurred during January-M arch,during June-August and during November-December in Taizhou during this period. The proportion of ILI in outpatient visit w as 3. 42%,ILI mainly occurred in adolescents and children aged 15 years,accounting for 76. 86% of the total cases. The annual ILI proportion in adolescents and children increased w ith year. Influenza B virus w as predominant in 2010,influenza A（ H1N1） virus pdm09 and B virus w ere predominant in 2011,influenza H3 virus and B virus w ere predominant in 2012 and influenza A（ H1N1） virus pdm09 w as predominant in 2013. Conclusion The seasonal incidence peak of influenza w as in spring,summer and w inter in Taizhou. The incidence peak of ILI w as consistent w ith the positive detection of influenza viruses. The outbreaks mainly occurred in schools. The predominant pathogens w ere influenza H3,H1N1 pdm09 and B viruses in Taizhou.