Resurgence of Dengue Virus Serotype 2: Findings from the 2023 Bangladesh Outbreak.

IF 1.9 4区 医学 Q3 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH
Anamul Hasan, Md Fahad Zamil, Afrida Tabassum Trina, Rajat Sanker Roy Biswas, Asifa Kumkum, Dilruba Ahmed, Mohammad Shafiul Alam
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引用次数: 0

Abstract

Bangladesh experienced the largest and deadliest dengue outbreak in 2023, after the virus had reappeared in the country 2 decades earlier. A total of 1,705 people died in Bangladesh, representing the highest case fatality rate (0.5%) due to dengue in the world for that year. The severity of dengue infection is to some extent related to the emergence of new circulating serotypes. To identify the possible predominant serotype in 2023, the reverse transcription polymerase chain reaction-based identification technique was used on stored serum samples of suspected dengue patients during the period between July and December 2023. The overall result of molecular serotyping showed that dengue virus (DENV-2) reappeared as the predominant serotype (74.1%), followed by a moderate number of samples with DENV-1 (19.8%) and DENV-3 (6.1%), in 2023. However, DENV-1 was found to be dominant in a few rural areas of Cox's Bazar districts. During the 2019 outbreak, DENV-3 was the dominant serotype, which seemed to be replaced by the DENV-2 serotype; this may have impacted the increased case fatality in 2023.

登革热病毒血清 2 型卷土重来:2023 年孟加拉国疫情调查结果。
孟加拉国在 2023 年爆发了规模最大、死亡人数最多的登革热疫情。孟加拉国共有 1 705 人死亡,是当年全球登革热致死率最高的国家(0.5%)。登革热感染的严重程度在一定程度上与新的流行血清型的出现有关。为确定 2023 年可能出现的主要血清型,研究人员对 2023 年 7 月至 12 月期间登革热疑似患者的血清样本进行了反转录聚合酶链反应鉴定。分子血清分型的总体结果显示,登革病毒(DENV-2)再次成为 2023 年的主要血清型(74.1%),其次是中等数量的 DENV-1 样本(19.8%)和 DENV-3 样本(6.1%)。然而,在考克斯巴扎尔县的几个农村地区,DENV-1 被发现为主要血清型。在2019年疫情爆发期间,DENV-3是主要的血清型,但似乎被DENV-2血清型所取代;这可能对2023年病例死亡率的增加产生了影响。
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来源期刊
American Journal of Tropical Medicine and Hygiene
American Journal of Tropical Medicine and Hygiene 医学-公共卫生、环境卫生与职业卫生
CiteScore
6.20
自引率
3.00%
发文量
508
审稿时长
3 months
期刊介绍: The American Journal of Tropical Medicine and Hygiene, established in 1921, is published monthly by the American Society of Tropical Medicine and Hygiene. It is among the top-ranked tropical medicine journals in the world publishing original scientific articles and the latest science covering new research with an emphasis on population, clinical and laboratory science and the application of technology in the fields of tropical medicine, parasitology, immunology, infectious diseases, epidemiology, basic and molecular biology, virology and international medicine. The Journal publishes unsolicited peer-reviewed manuscripts, review articles, short reports, images in Clinical Tropical Medicine, case studies, reports on the efficacy of new drugs and methods of treatment, prevention and control methodologies,new testing methods and equipment, book reports and Letters to the Editor. Topics range from applied epidemiology in such relevant areas as AIDS to the molecular biology of vaccine development. The Journal is of interest to epidemiologists, parasitologists, virologists, clinicians, entomologists and public health officials who are concerned with health issues of the tropics, developing nations and emerging infectious diseases. Major granting institutions including philanthropic and governmental institutions active in the public health field, and medical and scientific libraries throughout the world purchase the Journal. Two or more supplements to the Journal on topics of special interest are published annually. These supplements represent comprehensive and multidisciplinary discussions of issues of concern to tropical disease specialists and health issues of developing countries
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