西双版纳州景洪市2012年-2016年度流感监测结果分析

Analysis of influenza surveillance results in Jinghong City of Xishuangbanna from 2012 to 2016

目的 通过对西双版纳州景洪市2012年-2016年度流行性感冒的监测结果进行分析,了解流感流行状况、流感病毒流行株构成情况,为景洪市的流感防控提供科学依据。方法 采集流感样病例的鼻、咽拭子标本,用MDCK细胞进行流感病毒分离,病毒分离后采用血凝抑制方法（HI）进行流感病毒型别鉴定。结果 2012年-2016年度共采集流感样病例标本5 124份,分离到流感毒株211株,病毒分离率为4. 97%。其中甲型H1N1流感病毒82株（38. 86%）、季节性流感AH3N2亚型20株（9. 48%）、BY型51株（24. 17%）、BV型58株（27. 49%）。结论 景洪市2012年-2016年度流感流行的趋势特点：甲型H1N1、BV、BY亚型流感作为主要流行型株分别交替流行,同时H3亚型作为辅流行株在2012年-2014年、2015年-2016年共同流行。流感与性别无关,但与年龄有关。

Objective Through the analysis of influenza surveillance resuhs in Jinghong, Xishuangbanna from 2012 to 2016, this paper can understand the epidemic situation of influenza and the compositions of epidemic strains and influenza virus, so as to provide scientific basis for the prevention and control of influenza in Jinghong. Methods The samples of nasal and throat swabs from influenza- like cases were collected, and influenza virus was isolated by MDCK cells. The influenza virus type was identified by hemagglutination inhibition method after virus isolation. Results From 2012 to 2016, 5 124 samples of influenza - like cases were collected, from which 211 strains of influenza virus were isolated, including 82 strains of A1 H1N1 influenza virus （38.86%）, 20 strains of seasonal influenza AH3N2 subtype （9.48%） , 51 strains of BY type （24. 17% ）, and 58 strains of BV type （27.49%）. The virus isolation rate was 4.97%. Conclusion Influenza A H1N1, Bv and By subtype influ- enza were alternately popular as major epidemic strains in Jinghong during 2012 -2016, and H3 subtypes were popular as a sup- plemental epidemic strain in 2012, 2014, 2015 and 2016. Influenza patients are not related to gender but age.