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目的调查分析云南省首例H5N6人禽流感病例感染来源和传播途径,为进一步防制人禽流感提供科学依据。方法对首例H5N6人禽流感患者、密切接触者和患者暴露的野禽栖息地、活禽市场开展流行病学调查,并采集相关人员的呼吸道标本和外环境标本进行检测分析。结果病例标本检测结果为禽流感病毒(H5N6)核酸阳性,确定该病例为人感染高致病性禽流感患者。病例有明确的禽类接触史,共同暴露人员和密切接触者未出现疑似症状。活禽市场存在禽流感病毒(H5N6、H9N2)的大量污染。结论此次未出现人传人现象。感染来源可能与农贸市场环境有关。今后要继续加强不明原因肺炎监测,加强活禽市场监管,防止禽间疫情向人间扩散和传播。
Objective To investigate the source and transmission of the first H5N6 bird flu in Yunnan Province and provide a scientific basis for further prevention and control of human bird flu. Methods Epidemiological investigation was conducted on the first H5N6 bird flu patients, close contacts and exposed wild bird habitats and live poultry markets, and the respiratory specimens and external environment specimens of relevant personnel were collected for testing. Results The test results of the specimens were positive for the avian influenza virus (H5N6) and confirmed that the case was human being infected with HPAI. Cases of clear history of bird exposure, co-exposure and close contact with persons without suspicious symptoms. The live poultry market is experiencing significant contamination with the avian influenza virus (H5N6, H9N2). Conclusion The phenomenon of human transmission did not appear this time. The sources of infection may be related to the farmers market environment. In the future, it is necessary to continue to strengthen the monitoring of pneumonia of unexplained causes, strengthen supervision over the live poultry market and prevent the spread and spread of the epidemic to and from the poultry in the world.