Epidemic Characteristics of Dengue Fever in Pudong New Area of Shanghai in 2008- 2020 / 公共卫生与预防医学

ABSTRACT

Objective To analyze the epidemic characteristics of imported dengue fever in Pudong New Area of Shanghai from 2008 to 2020，and to explore its prevention and control strategy and measures． Methods The data of dengue fever cases in Pudong New Area from 2008 to 2020 were collected from the China Information System for Disease Control and Prevention. Descriptive epidemiological method was used to analyze the epidemic characteristics. Results A total of 45 cases of dengue fever were reported in Pudong during 2008-2020, all the cases were mild, and no deaths were reported．The male-to-female ratio was 2.46:1. The group aged 20-49 years accounted for 86.67%．The most common occupation was commercial service personnel and cadres (25 cases, accounting for 55.56%). The peak of incidence was from July to October with a total of 35 cases (77.78%). All the cases were imported from abroad, mainly from Southeast Asia and South Asia (43 cases, 95.56%). 15 cases (33.33%) had been ill before entry. 22 cases (48.89%) were first treated in tertiary hospitals. The median time intervals from onset to first clinic visit, from first clinic visit to diagnosis, and from onset to diagnosis were 1.0 d, 5.0 d, and 7.0 d, respectively. Serotypes of dengue virus were mainly Type I, Type III and Type II, which were 9 cases, 7 cases, and 6 cases, respectively. Conclusion The epidemic situation of dengue fever in Pudong New Area from 2008 to 2020 is relatively stable, all imported from abroad. The focus of the prevention and control is to promote the health education for overseas travelers, strengthen the monitoring sensitivity at border ports, enhance the diagnostic level of medical institutions, and timely find and report cases.