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目的分析人感染H7N9禽流感病例的流行病学特征,为有效防控人感染H7N9禽流感提供参考依据。方法对病例开展流行病学个案调查,详细了解其发病和诊疗经过,对密切接触者进行医学观察,运用PCR进行H7N9禽病毒核酸检测。结果结合流行病学史、临床表现和实验室检测结果,确诊死亡病例为贵州省首例输入性人感染H7N9禽流感病例,该病例无明确的禽类接触史。密切接触者中,仅患者配偶和其子出现流感样症状,但均未发现H7N9禽流感病毒感染。结论 H7N9禽流感病毒的感染途径不明,暂无人传人的证据,多部门协作对疫情防控具有积极作用。
Objective To analyze the epidemiological characteristics of human H7N9 bird flu and provide references for effective prevention and control of human H7N9 bird flu. Methods To carry out epidemiological investigation on cases, learn more about their pathogenesis and treatment, conduct medical observation on close contacts, and use PCR to detect H7N9 avian virus nucleic acid. Results Combined with the epidemiological history, clinical manifestations and laboratory test results, the dead case was confirmed as the first case of H7N9 avian influenza infection in Guizhou Province. There was no clear history of bird contact in this case. Of the close contacts, only the patient’s spouse and her son developed flu-like symptoms, but none of the H7N9 bird flu viruses were found. Conclusions The route of infection of H7N9 bird flu virus is unknown. There is no evidence of human transmission and multisectoral cooperation has a positive effect on prevention and control of epidemic situation.