目的了解羁押人员集中发生疫情暴发原因和流行特征,为类似疫情的防控提供科学依据。方法采用现场流行病学方法调查处理本次疫情,分析其流行病学特征,并对采集的标本用RT-PCR方法进行病原学检测。结果该疫情共发生病例202例,罹患率10.20%,其中流感样病例60例,占29.7%,临床以发热、咽痛、咳嗽、咽喉充血、个别扁桃体肿大为主要症状。实验室PCR结果提示A型流感病毒阳性,故认为这是1起A型流感暴发的集中流行。结论本次疫情集中突然暴发流行的原因可能是看守所羁押人员过于密集、监舍居住拥挤,有适发的环境及季节等因素。 Objective To understand the reasons and epidemic characteristics of the outbreaks of the epidemic in detention of prisoners and to provide a scientific basis for prevention and control of similar epidemics. Methods Epidemiological methods were used to investigate and deal with the epidemic situation, the epidemiological characteristics were analyzed, and the collected specimens were detected by RT-PCR. Results A total of 202 cases were found in this outbreak. The attack rate was 10.20%. Among them, 60 cases were flu-like cases, accounting for 29.7%. The main symptoms were fever, sore throat, cough, throat congestion and some tonsils. Laboratory PCR results suggest positive influenza A virus, it is considered a pandemic influenza type A outbreak. Conclusion The reasons for the sudden outbreak of epidemic concentrated in this epidemic may be that the detention center is too densely populated, the living quarters of the prison buildings are too crowded, the environment and the seasons where there are suitable facilities and so on.