〔目的〕了解重庆口岸出入境人群的登革热血清流行病学特征,为重庆口岸地区登革热监控工作提供科学的依据。〔方法〕按系统抽样抽取研究对象,进行登革热IgG抗体血清学检测和流行病学调查。〔结果〕检测1556份样本,其中182份登革热IgG抗体阳性,阳性率11.70%。入境人员阳性率18.87%,明显高于出境人员;外籍人员阳性率超过20%;本市人员不足10%。不同国籍人员间阳性率的差异有统计学意义,其中东南亚国籍人员阳性率62.16%,位列首位。不同职业人员间阳性率的差异有统计学意义,其中有6类人员阳性率超过10%,从高到低依次为渔民/船员、饮食服务人员、离退休人员、教师、商人、民工。曾经有国际旅行经历者阳性率(19.17%)高于没有国际旅行经历者(8.10%);出国频次越高的,阳性率也越高;不同目的国际旅行之间的登革热抗体阳性率的差别有统计学意义,其中出国劳务人员阳性率最高(27.55%);曾经到达不同地区人员的阳性率的差别也有统计学意义,其中有4个地区阳性率超过50%,从高到低依次为加勒比、东南亚、南美、南亚。来自/停留流行区人员的登革热阳性率(32%)明显高于未来自/停留流行区人员的登革热阳性率(9.85%)。多因素分析提示:有国际旅行经历、境外人员血清登革热IgG阳性率高,特别是有频繁出国经历、来自/停留主要流行区、有东南亚居留史是重要危险因素。〔结论〕重庆本地人员登革热暴露机会较少、未发生或极少发生本地传播;对重庆地区而言,重点在传染源的发现和控制。对于口岸登革热防治工作,应有所侧重地对有国际旅行经历的人员的检疫和监测,特别要重点关注出入境频繁的、有登革热流行区居留史的人员。 [Objective] To understand the epidemiological characteristics of dengue fever in entry-exit population of Chongqing port and provide a scientific basis for the monitoring of dengue fever in the port area of ​​Chongqing. [Methods] According to the systematic sampling, the subjects were studied for serological detection and epidemiological investigation of dengue IgG antibody. [Results] A total of 1556 samples were tested, of which 182 were positive for dengue IgG and the positive rate was 11.70%. The positive rate of immigrants was 18.87%, which was significantly higher than those who left the country; the positive rate of foreigners was more than 20%; and less than 10% of city staff. The positive rates of different nationalities were statistically significant, of which 62.16% were Southeast Asian nationals, ranking the first place. The positive rates among different occupations were statistically significant, of which 6 were positive for more than 10%, followed by fishermen / sailors, foodservice workers, retired staff, teachers, traders and migrant workers from high to low. The positive rate of international travel experience (19.17%) was higher than that of no international travel experience (8.10%); the higher the frequency of overseas trips was, the higher the positive rate was; the difference between the positive rates of dengue fever antibodies Statistical significance, of which the highest rate of overseas workers (27.55%); once arrived in different regions of the positive rate of the difference was statistically significant, of which 4 positive rate of more than 50%, followed by the Caribbean from high to low, Southeast Asia, South America, South Asia. The positive rate of dengue fever (32%) from the persons in / out of endemic area was significantly higher than the rate of positive dengue fever (9.85%) from those who stopped / stayed in the area. Multivariate analysis indicated that there was an international travel experience and the positive rate of serum dengue IgG was high among overseas personnel. In particular, frequent expatriates’ experience of leaving and leaving the country was the main epidemic area. Residence history in Southeast Asia was an important risk factor. [Conclusion] Local people in Chongqing have less chance of dengue exposure and no local transmission occurs or rarely occur. For Chongqing area, the focus is on the detection and control of sources of infection. For the prevention and control of dengue in ports, there should be a special emphasis on the quarantine and monitoring of those with international travel experience. In particular, we should pay special attention to the frequent travelers who have lived in dengue endemic areas.