贵州省部分地区H7亚型禽流感监测与分析

Detection and Analysis of H7 Subtype Avian Influenza in 2015 in Guizhou Province

关键词:  H7亚型禽流感  监测  贵州省

Key words:  H7 subtype avian influenza  detection  Guizhou province

摘要:

为了解贵州省H7亚型禽流感感染情况，采用HI试验对全省9个地区家禽血清样本进行血清抗体检测，PT-PCR方法对家禽咽-肛拭子、养禽场环境样本和野鸟粪便进行病原核酸检测。结果显示：在1570份家禽血清样本中，H7亚型禽流感血清抗体阳性率为0.45%(7/1570)；在350份家禽咽-肛拭子和310份养殖场环境样本中，均未检测出H7亚型禽流感病毒核酸；在160份野鸟粪便中，有1份为H7亚型禽流感病毒核酸阳性，阳性率为0.63%(1/160)。试验提示，在贵州省养禽场中不存在H7亚型禽流感感染，但迁徙野禽中可能存在H7亚型禽流感隐性感染，应当引起重视。

Abstract:

To master the infection situation of H7 subtype avian influenza (AI-H7) in Guizhou province, the serum samples of poultry were collected to detect the AI-H7 antibodies by HI test, and the samples of swallow-anal swabs and environment and wild bird faeces were gathered to determine the pathogenic nucleic acid of AI-H7 by RT-PCR method. The results showed that the positive rate of AI-H7 antibodies was 0.45% in 1570 of poultry serum samples. And the pathogenic nucleic acid of AI-H7 were not detected in 350 of swallow-anal swabs and 310 of farm environment samples, but 1 sample in 160 of wild bird faeces which the positive rate was 0.63%. These results suggested that there were no infection of AI-H7 in poultry farm, but maybe latent infection in wild birds and should be paid attention.