禽类养殖场人员禽流感病毒抗体水平调查

目的 调查珠海地区养殖场人员中禽流感H5和H9二种亚型血清中抗体水平，以了解上述2种禽类甲型流感病毒亚型以往的接触感染情况，为防治人问禽流感提供科学依据。方法 珠海地区养殖场人员血清277份，正常出入境人员血清270份，通过血凝抑制试验HI实验进行抗体检测。结果 养殖场人群中H9亚型抗体阳性率为2．17％，同时发现有1份血清H5抗体阳性，H5抗体阳性率为0．36％。而正常出入境人群H9亚型抗体阳性率为2．96％；未见H5亚型抗体的存在。结论 H9亚型在养殖场人群和出入境人群中的存在隐性感染，但感染率不高；养殖场人群H5亚型抗体的存在也应值得注意。

Serological surveillance on antibody to avian influenza subtype H5, H9 virus in poultry breeding workers

Objective To detect the seroepidemiologic antibody to the subtypes of avian influenza A virus,H5 and H9 in poultry breeding workers,to understand the infection of avian influenza A virus.Methods For detecting antibody to these two subtypes with HI test,277 serum specimens were collected from poultry breeding workers,and 270 were from normal Entry-Exit passengers in Zhuhai port.Results In poultry breeding workers,the positive rate to H9 was 2 17%,and 1 serum specimens had antibody to H5,The positive rate was 0 36%,while in normal Entry-Exit passengers,the positive rate to H9 was 2 196%,but none had antibody to H5.Conclusion H9 subtype influenza A virus had already infected human beings,the positive rate was not high.It was attention to H5 subtype in poultry breeding workers.