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目的对西安市流行性感冒2010年-2014年监测结果进行分析,为西安市流感防控提供依据。方法通过中国流感监测信息系统收集西安市流感样病例(ILI)及流感病例资料,对其进行流行病学及病原学分析,同时分析疫情的发生情况。结果 2010年-2014年西安市共报告ILI 72 582例,ILI比例平均为1.96%,ILI比例最高为2014年,最低为2012年。就诊高峰在每年的第48周-次年的第8周,ILI主要集中在0岁~4岁和5岁~14岁组。共检测鼻咽拭子标本10 285份,流感病毒阳性1 291份,阳性率为12.55%。2010年、2011年、2012年的优势株为B型,2013年的优势株为新H1N1,2014年为季H3。男性阳性数多于女性。新H1N1和季H3阳性检出数最多的是0岁~4岁组,B型阳性检出数最多的是5岁~14岁组。共发生流感疫情30起,中小学28起,大学2起。结论推荐每年9月-10月接种流感疫苗及加强对孕妇﹑老人和学生的接种。
Objective To analyze the surveillance results of influenza in Xi’an from 2010 to 2014 in Xi’an and provide basis for prevention and control of influenza in Xi’an. Methods Influenza-like cases (ILI) and influenza cases in Xi’an were collected through the China Influenza Surveillance Information System. Epidemiology and etiology were analyzed and epidemic situation was also analyzed. Results From 2010 to 2014, a total of 582 ILI cases were reported in Xi’an, with an average ILI ratio of 1.96%. The highest ILI ratio was in 2014 and the lowest in 2012. The peak of treatment In the 48th week of each year - the 8th week of the following year, ILI is mainly concentrated in 0 years old to 4 years old and 5 years old to 14 years old group. A total of 10 285 nasopharyngeal swab specimens were detected, 1 291 were positive for influenza virus, the positive rate was 12.55%. The predominant strains in 2010, 2011 and 2012 were type B, the dominant strain in 2013 was H1N1, and H3 in 2014. Men are more positive than women. New H1N1 and season H3 positive detection number is 0 years old to 4 years old group, B type positive detection number is the most 5 to 14 years old group. A total of 30 flu outbreaks, 28 primary and secondary schools, universities from 2. Conclusion It is recommended that flu vaccination should be given every September to October and vaccination should be strengthened for pregnant women, the elderly and students.