广东某工地一起新型甲型H1N1流感疫情暴发的调查

The Investigation of A Breakout of New Type A Influenza H1N1 in A Construction Team

目的调查一起新型甲型流感疫情发病的时间分布、年龄分布和流行特征。方法通过对202例患者进行姓名、性别、年龄、症状、体征等详细记录并进行统计归纳。结果此次疫情主要在青年人中发生，以发热为主要症状，发病例数与时间的关系呈单峰状，整个疫情流行过程约2wk左右。结论新型甲型H1N1流感在人群密集的单位可引起迅速疫情暴发。在青年人群中引起重症感染的概率较小。

Objective To investigate the time distribution, age distribution and epidemic features of the type A influenza H1N1. Methods Everyone of the patients of type A influenza H1N1 was investigated. The names, sex, ages, complains and symptoms were noted and analyzed. Results The patients of type A influenza H1N1 in the construction team were all young persons. The most common complain was fever. The number of patients in the epidemic situation distributed like a single peak. The epidemic situation lasted about two weeks. Conclusions The new type A influenza H1N1 can breakout in a dense population. It seemed that the type A influenza only cause a mild infection in young people.