【摘要】 目的开展江西省首例人感染H7N9禽流感病例流行病学调查,探索可能的感染来源,为进一步认识与防治禽流感提供科学依据。方法运用描述流行病学方法对患者、密切接触者、患者暴露的小区菜场和小区周边活禽市场开展现场流行病学调查,并采集密切接触者、农贸市场环境标本进行检测分析。结果发现江西省首例人感染H7N9禽流感确诊病例无明确病死禽接触史,密切接触者中无不明原因肺炎病例,未发现人与人之间传播证据,相关农贸市场环境标本H7N9禽流感病毒核酸检测阳性。结论江西省首例人感染高致病性禽流感病例属本地感染、非人传人的病例,感染来源可能与农贸市场环境暴露有关。更多还原

【Abstract】 Objective The study performed an epidemiological investigation of the first human infection with H7N9 avian influenza virus in Jiangxi Province to explore the possible source of infection, so to provide a scientific reference for the further understanding and prevention and control of avian influenza. Methods Descriptive epidemiological approach was used to field-investigate the patients, close contacts of the patients, and community farmers’ markets and live poultry markets that the patients exposed to. Specimens of the close contacts and the environment of the markets were also collected and analyzed. Results The study found that the first confirmed case of human infection with H7N9 avian influenza virus in Jiangxi had no clear history of contact with dead poultry and that no pneumonia of unknown causes was detected among the close contacts. No evidence of human-to-human transmission was found, but environmental specimens of the markets were tested positive of nucleic acids of H7N9 avian influenza virus. Conclusion The first case of human infection with highly pathogenic avian influenza in Jiangxi Province is a local non-human-to-human transmitted infection. The source of infection may relate to the environmental exposure to the local markets.更多还原