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为了解江西省猪流感病毒的流行情况,通过血凝抑制试验(Hemagglutination Inhibition Test,HAI),我们检测了2012年至2015年间收集的2 005份血清样品中的H1和H3亚型流感病毒的抗体。结果显示,江西省猪群血清中的H1和H3亚型流感病毒的血清抗体阳性率分别为34.76%(697/2005,95%CI 32.68%~36.89%)和23.69%(475/2005,21.84%~25.61%),H1和H3亚型流感病毒共感染的阳性率为6.78%(136/2005,5.72%~7.97%)。通过对不同分支流感病毒的血清抗体阳性率统计分析后发现,江西省内不同地区内流感病毒呈现明显的地域性流行,并且2012年以来,全省pdm/09的血清抗体阳性率由36.74%(32.18%~41.50%)下降到20.44%(17.14%~24.06%),H3亚型的流感病毒抗体阳性率由4.85%(1.59%~10.97%)上升到41.24%(37.08%~45.49%),江西省猪群中流行的主要分支发生变化。本研究为江西省流感病毒的监测与预防提供了全面的数据支持。
To understand the prevalence of swine influenza viruses in Jiangxi Province, we detected antibodies to H1 and H3 subtype influenza viruses in 2 005 serum samples collected between 2012 and 2015 through the Hemagglutination Inhibition Test (HAI) . The results showed that the positive rates of seroprevalence of H1 and H3 subtype influenza viruses in swine herds were 34.76% (697/2005, 95% CI 32.68% ~ 36.89%) and 23.69% (475/2005, 21.84% ~ 25.61%). The positive rates of co-infection of H1 and H3 influenza viruses were 6.78% (136/2005, 57.2% ~ 7.97%). Through the statistical analysis of the positive rate of serum antibodies of different branches of influenza virus, it was found that there was a clear regional epidemic of influenza virus in different areas of Jiangxi Province. And since 2012, the positive rate of serum antibody of pdm / 09 from 36.74% 32.18% ~ 41.50%) decreased to 20.44% (17.14% ~ 24.06%). The positive rate of influenza virus of H3 subtype increased from 4.85% (1.59% -10.97%) to 41.24% (37.08% ~ 45.49%), Jiangxi The main branch popular in the provincial herds changed. This study provided comprehensive data support for the surveillance and prevention of influenza virus in Jiangxi Province.