ĐẶC ĐIỂM DỊCH TỄ HỌC VÀ SỰ LƯU HÀNH CỦA CÁC TYPE HUYẾT THANH VI RÚT DENGUE GÂY BỆNH SỐT XUẤT HUYẾT TẠI TỈNH ĐẮK LẮK NĂM 2020

Abstract

Background: Dengue hemorrhagic fever is an acute infectious disease caused by the dengue virus and transmitted by Aedes mosquitoes. Dengue fever cases are increasing rapidly in many parts of the world especially in poor urban, suburban, and countryside areas. Objectives: A descriptive study of the epidemiological features and identify serotype of DHF virus causing dengue hemorrhagic fever in Dak Lak, in 2020. Materials and methods: A descriptive study of a retrospective case series with a sample size of 118 cases of dengue hemorrhagic fever and RT-PCR test from Tay Nguyen Institute of Hygiene and Epidemiology. Results: In Dak Lak povince, the number of dengue cases was recorded in Buon Don district, CuM'gar district, Krong Pak district. The disease started to be recorded and increased in the rainy season months, from July to November and peak in October of the year. The disease spread in all age groups but the most affected age group is ≥ 15 years old and the prevalence is similar between in male and female. There are 3 out of 4 types of dengue hemorrhagic fever recorded, in which type DENV-2 accounts for the highest proportion (58.5%), followed by DENV-1 (39.8%) and the lowest was DENV-4 (1.7%). The circulation of the DENV-1 and DENV-2 types was quite similar in months of the year, while the DENV-4 type appears only in July. Conclusion: There needs to be effective measures to prevent dengue fever, especially in districts with a high number of cases and in the rainy season months.