摘要
目的了解贵州省B型流感病毒的流行特征和规律,为其预防与控制提供依据。方法采用描述性方法对贵州省2013年4月1日—2016年3月31日B型流感病毒RT-PCR检测结果进行统计。结果贵州省2013—2016年3个监测年度B型流感病毒RT-PCR检测阳性1 904份,其中By系1 215份、Bv系642份,2013年4月—2014年3月、2014年4月—2015年3月2个监测年度B型流感的优势流行株都是By系,而2015年4月—2016年3月是Bv和By系共同流行,流行季节主要在冬春季;B型流感病毒男性检出所占比率较高,占56.83%;15岁以下低年龄组人群B型流感病毒检出数最高(70.80%),而Bv系在0~岁年龄组最高(42.37%),By系在5~岁年龄组最高(35.56%);混合感染病原组合构成主要以By+Bv为主,占67.65%,与B型有关的混合感染数占95.59%。结论贵州省B型流感病毒存在By和Bv两种系别的流行,流行季节为冬春季,男性感染病例多于女性,发病以15岁以下人群为主,加强低年龄群体流感疫苗的接种和监测具有重要意义。
Objective To understand the epidemic characteristics and regularity of influenza B virus in Guizhou Province, and provide scientific evidence for the control and prevention of influenza.Methods Results of reverse transcription polymerase chain reaction（PT-PCR） of influenza B virus in Guizhou Province from April 1, 2013 to March 31, 2016 were statistically analyzed.Results A total of 1 904 samples were detected influenza B virus by RT-PCR, B/Yamagata （By） lineage and B/Victoria （Bv） lineage were 1 215 and 642 respectively.In April 2013-March 2014 and April 2014-March 2015, the predominant strains of influenza B were both By lineage, in April 2015-March 2016, the predominant strains of influenza B were Bv and By lineages, the epidemic peaks were in winter and spring;there＇s a higher positive percentage of influenza B in male, accounting for 56.83%;the highest detection rate of influenza B virus was found in population aged 〈15 years（70.80%）,Bv and By lineages were the highest in the 0~ （42.37%） and 5~ age groups （35.56%） respectively;the main pathogen causing mixed infection was By＋Bv （67.65%）,mixed infection with influenza B virus accounted for 95.59%.Conclusion There are two lineages By and Bv epidemic in Guizhou Province, the epidemic peaks of influenza B are in winter and spring, male cases are higher than female, people under 15 years old are the high-risk group for influenza B, it is of great significance to strengthen the vaccination and surveillance of influenza in low age population.
出处
《中国感染控制杂志》
CAS
北大核心
2017年第4期338-342,共5页
Chinese Journal of Infection Control
基金
贵州省高层次创新型人才培养项目(黔科合人才(2016)4021号)
关键词
B型流感病毒
病原学
病毒分离
流行特征
监测
influenza B virus
pathogen
virus isolation
epidemiological characteristic
monitoring
