论文部分内容阅读
目的了解株洲市流感疫情变化规律,指导流感防控。方法对流感监测哨点医院报告的流感样病例(ILI)和辖区内报告的暴发疫情进行描述性分析,应用MDCK细胞对阳性标本进行病毒分离。结果 2008-2013年流感监测哨点医院共报告门诊病例总数1 749 601例,流感样病例113 108例,ILI%为6.46%。从2家监测哨点医院共采集ILI咽拭子样本4 503份,经MDCK细胞分离、血凝抑制方法总共鉴定流感病毒743株,总分离率为16.50%,其中甲型H1N1有67株,新型甲型H1N1有101株,H3N2型225株,B型(Yamagata系)92株,B型(Victoria系)258株,各型流感病毒季节性消长趋势明显。流感样病例暴发疫情9起,均发生在学校,发病人数419例,波及人数19 175人,罹患率为2.18%。结论流感样病例数变化规律与病原学监测结果相一致,学校是今后的监测重点,应加强人群的健康教育,监测网络的敏感性有待进一步提高。
Objective To understand the change of influenza epidemic in Zhuzhou and guide the prevention and control of influenza. Methods Descriptive analysis was performed on influenza-like illness (ILI) reported by the sentinel surveillance hospital and the reported outbreak in the area. MDCK cells were used to isolate the positive samples. Results A total of 1 749 601 out-patient cases were reported in the influenza surveillance sentinel hospitals between 2008 and 2013, with 113 108 flu-like cases and ILI% 6.46%. A total of 4 503 samples of ILI throat swab were collected from 2 monitoring sentinel hospitals and were separated by MDCK cells. A total of 743 strains of influenza virus were identified by hemagglutination inhibition method with a total isolation rate of 16.50%, of which 67 strains were H1N1, There were 101 strains of H1N1, 225 strains of H3N2, 92 strains of B type (Yamagata strain) and 258 strains of B strain (Victoria strain). The seasonal fluctuation of each type of influenza virus was obvious. Outbreaks of influenza-like cases occurred in 9 cases, both in schools, the number of cases of 419 cases, affecting 19 175 people, the attack rate was 2.18%. Conclusions The variation of the number of flu-like cases is consistent with the results of the etiological monitoring. The school is the key point for monitoring in the future. Health education of the population should be strengthened and the sensitivity of monitoring network needs to be further improved.