一例人感染高致病性禽流感病例的流行病学调查

Epidemiological investigation on a case of human infection with highly pathogenic avian influenza

目的明确人感染高致病性禽流感疫情的发生,探讨感染来源,以采取相应措施控制疫情的发生。方法采用现场流行病学调查和实验室检测相结合的方法对深圳宝安区1例人感染高致病性禽流感病例个案疫情进行分析。结果该例病例无明确的家禽接触及进食史,病人发病前经常在有大量各类野生候鸟活动的栖息地附近晨练。实验室检测发现该例病毒与香港2011年禽流感死亡的野鸟病毒基因接近,与家禽较远。结论该病例是2011年中全国唯一的1例人禽流感确诊病例,感染途径很可能与野生候鸟有关,建议在冬春季节提醒群众尽量避免直接接触野生候鸟及其排泄物。

[Objective]To study the case of human infection with highly pathogenic avian influenza,explore the source of infection,so as to carry out the appropriate measures to control the epidemic situation.[Methods]By using the field epidemiological investigation and laboratory testing,a case of human infection with highly pathogenic avian influenza in Baoan district of Shenzhen City was analyzed.[Results]The patient had no definite history of contact with poultry and eating poultry.Before the onset,the patient often dose morning exercises near the habitat of wild migratory birds.Laboratory testing found that the virus gene of this case was close to the dead wild birds that infected with avian influenza in HK in 2011,and was different from the poultry.[Conclusion]This is the only diagnosed case of human infection with avian influenza in China in 2011,and the routes of infection may be related to wild migratory birds.It is recommended to suggest the public to avoid the direct contact with wild migratory birds and their droppings in the winter and spring.