2011年～2012年我国不同地区猪流感血清学监测

摘要

To investigate the prevalence of swine influenza virus (SIV) in China,serological surveillance of SIV was conducted in different regions from 2011 to 2012.A total of 13,044 pig serum samples were collected from slaughterhouse,large-scale pig farms and individual farms.These samples were tested by the HI test for antibody detection of the classic swine H1,Eurasian avian-like H1,2009 H1N1 pandemic virus,H3 subtype virus,avian H5 and H9 subtype virus.Serological tests showed that the positive rates and geometric mean antibody titer (GMT) of classic swine H1,the Eurasian avian-like H1 and Pandemic H1N1 2009 were higher than other SIV subtypes.In addition,Eurasian avian-like H1 positive were slightly increased from 42.24％ to 45.89％ during 2011 to 2012.While,the GMT pandemic H1N1 2009 and classic swine H1 were 53.32 and 73.2 which were highest in 2011 and 2012,respectively.The results indicated that H1N1 subtype SIV infection is predominated subtype in China during 2011 to 2012.%为了解猪流感病毒(SIV)在我国的流行情况,本研究对2011年～2012年从不同省市重点地区屠宰场、规模化猪场和个体养殖户采集猪血清样品13044份,以经典H1N1 (CS)、类禽H1N1 (EA)、甲型H1N1(pdm/09)、H3N2、H5N1、H9N2亚型SIV抗原并采用血凝抑制(HI)方法检测.结果显示,2011年～2012年我国猪血清中类禽H1N1亚型SIV抗体平均阳性率比其他亚型高,分别为42.24％和45.89％,2011年甲型H1N1亚型SIV血清抗体平均滴度(GMT)比其他亚型高,GMT为53.32,2012年经典H1N1 GMT比其他亚型高,GMT为73.2.结果表明2011年～2012年我国猪群中H1N1亚型SIV感染较为普遍.