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目的分析2010—2011年流感监测结果,为防控提供依据。方法通过“中国流感监测信息系统”收集2010—2011年常德市妇幼保健院流感样病例资料,用狗肾传代细胞(MDCK)对咽拭子标本进行病毒分离,用血凝抑制试验鉴定病毒型别,用描述性流行病学方法进行分析。结果 2010—2011年流感样病例就诊比例(ILI%)6.7%,2010年(7.6%)比2011年(5.8%)高。病原检测阳性率9.3%,2011年(13.2%)比2010年(5.7%)高;学生阳性率(19.3%)比散居儿童(8.8%)高;5个年龄组阳性率逐步增高,0~6个月最低(3.8%),≥6岁组最高(16.0%);阳性率无性别差异。流感发病高峰主要在冬春季,夏季不明显;病毒存在B、A型交替感染现象。结论 3岁以上的幼托和小学儿童是流感发生的高危人群,应加强监测并采取针对性防控措施。
Objective To analyze the results of influenza surveillance from 2010 to 2011 and provide basis for prevention and control. Methods The data of flu-like illness in Changde MCH from 2010 to 2011 were collected through “China Influenza Surveillance Information System”. The virus was isolated from pharyngeal swab specimens using MDCK, and the virus was identified by the hemagglutination inhibition test Type, using descriptive epidemiological methods for analysis. Results The proportion of flu-like cases treated during 2010-2011 (ILI%) was 6.7% and higher in 2010 (7.6%) than in 2011 (5.8%). The positive rate of pathogen detection was 9.3% in 2011 (13.2%), which was higher than that of 2010 (5.7%). The positive rate of students was higher than that of diaspora (8.8%). The positive rate of 5 age groups was gradually increased from 0 to 6 The lowest was month (3.8%), the highest was (≥6.0%) in group of 6 years old. There was no gender difference in positive rate. Flu peak incidence in winter and spring, summer is not obvious; virus B, A-type alternating infection. Conclusion The children of preschool children and primary school children over 3 years of age are at high risk of influenza. We should strengthen the monitoring and take targeted prevention and control measures.