2012—2016年新疆巴州外环境禽流感监测分析

Surveillance of avian influenza in external environments in Bayingolin Mongol prefecture of Xinjiang,2012—2016

目的分析2012—2016年新疆巴音郭楞蒙古自治州(简称巴州)禽流感外环境监测结果,为人感染高致病性禽流感的防控和预警提供参考依据。方法采集巴州各县(市)外环境标本,用实时荧光PCR法检测禽流感病毒FluA,阳性者进一步检测H5、H9和H7亚型。结果采集的680份外环境标本中,阳性106份、总阳性率15.59%,其中103份为H9;阳性率最高的标本为笼具表面擦拭标本(20.11%)、来自城乡活禽市场(26.33%)和家禽屠宰加工厂(26.09%)的标本,第一季度(28.96%)和2015年(25.93%)检测阳性率最高。结论巴州活禽市场和家禽屠宰加工厂存在禽流感病毒,活禽市场是人暴露禽流感病毒的高危场所,应采取综合性防控措施。

Objective To analyze the results of surveillance of avian influenza in external environment in Bayingolin Mongol prefecture from 2012 to 2016, to provide references for the prevention and early warning of human infection with avian influenza. Methods Samples of external environment were collected from counties/city of the prefecture for detection on nucleic acid of avian influenza virus with real-time PCR. The positive samples were further detected for H5, H7 and H9 nucleic acid. Results Out of the collected 680 samples, there were 106 of the positive, with the positive rate of 15.59%, and 103 were H9 subtype. The positive rate was the highest in the samples from surface swab of cages（20.11%）, in the live poultry markets（26.33%） and from slaughter house（26.09%）. The highest positive rate was in the first quarter（28.96%） and in2015（25.93%）. Conclusions There is avian influenza virus in live poultry markets and slaughter house, and the risk of human infection exists in live poultry markets. It is necessary to take comprehensive measures to prevent human from infection with avian influenza virus.