山东省部分地区鸡源大肠杆菌与低致病性H9亚型禽流感病毒混合感染的调查

A survey on the mixed infection of chicken-derived Escherichia coli with low-pathogenic H9 subtype avian influenza virus in the partial regions of Shandong province

为了解近年来山东省鸡大肠杆菌与H9亚型禽流感病毒混合感染的情况,对2012年1月份至2014年3月份期间山东省部分地区送检的1 816份病料进行研究,通过大肠杆菌的分离鉴定和H9亚型禽流感病毒的血凝抑制试验,结果分离出大肠杆菌116例,占总病料的6.39%;检出H9亚型禽流感病毒495例,占总病料的27.26%;检出大肠杆菌和H9亚型禽流感病毒混合感染46例,占总病料的2.53%;且混合感染检出率在第一、四季度较高;青岛、聊城地区大肠杆菌与H9亚型禽流感混合感染检出率高于潍坊和烟台。调查结果表明临床鸡大肠杆菌和H9亚型禽流感病毒混合感染现象比较普遍,严重威胁着山东地区养殖业的发展。

To understand the situation of the mixed infection of chicken - derived Escherichia coli （ E. coli） with H9 subtype avian influenza virus in shandong province in recent years, the inspected 1 816 ：pathological materials from the partial regions of Shandong province during Janu- ary 2012 to March 2014 were studied. The isolation and identification of E. coli and hemagglutinatien - inhibition test for the detection of H9 subtype avian influenza were conducted, respectively. The results shewed that 116 cases of E. coil were isolated, which accounted for 6.39% of the total pathological materials. 495 cases of H9 subtype avian influenza were detected, which accounted for 27.26% of the total pathological materials. Forty - six eases of the mix infection of E. eoli with H9 subtype avian influenza virus, which accounted for 2.53% of the total patho- logical materials, The detection rate of the mixed infection was higher in the first and fourth quarters, and the detection rate of the mixed infection of E. coil with H9 subtype of avian influenza virus in Qingdao and Liaocheng was higher than that in Weifang and Yantai. The survey results indicate that the phenomenon of the mixed infection of chicken - derived E. coli with H9 subtype of avian influenza virus is relatively common in the clinic, which brings a serious threat to the development of the breeding industry in Shandong province.