Emergence of a Novel Dengue Virus 3 (DENV-3) Genotype-I Coincident with Increased DENV-3 Cases in Yangon, Myanmar between 2017 and 2019

Dengue fever, caused by the mosquito-borne dengue virus (DENV), has been endemic in Myanmar since 1970 and it has become a significant public health burden. It is crucial that circulating DENV strains are identified and monitored, and that their transmission efficiency and association with disease s...

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Veröffentlicht in:Viruses 2021-06, Vol.13 (6), p.1152, Article 1152
Hauptverfasser: Soe, Aung Min, Ngwe Tun, Mya Myat, Nabeshima, Takeshi, Myat, Theingi Win, Htun, Moh Moh, Lin, Htin, Hom, Nang Sarm, Inoue, Shingo, Nwe, Khine Mya, Aye, Lynn Pa Pa, Fukuta, Mizuki, Thant, Kyaw Zin, Hasebe, Futoshi, Morita, Kouichi, Shresta, Sujan, Thu, Hlaing Myat, Moi, Meng Ling
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container_issue 6
container_start_page 1152
container_title Viruses
container_volume 13
creator Soe, Aung Min
Ngwe Tun, Mya Myat
Nabeshima, Takeshi
Myat, Theingi Win
Htun, Moh Moh
Lin, Htin
Hom, Nang Sarm
Inoue, Shingo
Nwe, Khine Mya
Aye, Lynn Pa Pa
Fukuta, Mizuki
Thant, Kyaw Zin
Hasebe, Futoshi
Morita, Kouichi
Shresta, Sujan
Thu, Hlaing Myat
Moi, Meng Ling
description Dengue fever, caused by the mosquito-borne dengue virus (DENV), has been endemic in Myanmar since 1970 and it has become a significant public health burden. It is crucial that circulating DENV strains are identified and monitored, and that their transmission efficiency and association with disease severity is understood. In this study, we analyzed DENV-1, DENV-2, DENV-3, and DENV-4 serotypes in 1235 serum samples collected in Myanmar between 2017 and 2019. Whole-genome sequencing of DENV-1-4 demonstrated that most DENV-1-4 strains had been circulating in Myanmar for several years. We also identified the emergence of DENV-3 genotype-I in 2017 samples, which persisted through 2018 and 2019. The emergence of the strain coincided with a period of increased DENV-3 cases and marked changes in the serotype dynamics. Nevertheless, we detected no significant differences between serum viral loads, disease severity, and infection status of individuals infected with different DENV serotypes during the 3-year study. Our results not only identify the spread of a new DENV-3 genotype into Yangon, Myanmar, but also support the importance of DENV evolution in changing the epidemic dynamics in endemic regions.
doi_str_mv 10.3390/v13061152
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subjects Amino acids
Cloning
co-circulation
Dengue fever
dengue outbreak
DENV-3
Epidemics
Fever
Genomes
Genotype & phenotype
genotype-1
Genotypes
Infections
Life Sciences & Biomedicine
Myanmar
Phylogenetics
Public health
Science & Technology
Serology
Serotypes
Strains (organisms)
Variance analysis
Virology
Viruses
Whole genome sequencing
title Emergence of a Novel Dengue Virus 3 (DENV-3) Genotype-I Coincident with Increased DENV-3 Cases in Yangon, Myanmar between 2017 and 2019
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