The 2022 dengue outbreak in Bangladesh: hypotheses for the late resurgence of cases and fatalities.
2022 dengue outbreak
Bangladesh
DENV-4
rainfall
serotype
Journal
Journal of medical entomology
ISSN: 1938-2928
Titre abrégé: J Med Entomol
Pays: England
ID NLM: 0375400
Informations de publication
Date de publication:
12 07 2023
12 07 2023
Historique:
received:
05
01
2023
revised:
02
04
2023
accepted:
10
05
2023
medline:
14
7
2023
pubmed:
19
5
2023
entrez:
18
5
2023
Statut:
ppublish
Résumé
Bangladesh reported the highest number of annual deaths (n = 281) related to dengue virus infection in 2022 since the virus reappeared in the country in 2000. Earlier studies showed that >92% of the annual cases occurred between the months of August and September. The 2022 outbreak is characterized by late onset of dengue cases with unusually higher deaths in colder months, that is, October-December. Here we present possible hypotheses and explanations for this late resurgence of dengue cases. First, in 2022, the rainfall started late in the season. Compared to the monthly average rainfall for September and October between 2003 and 2021, there was 137 mm of additional monthly rainfall recorded in September and October 2022. Furthermore, the year 2022 was relatively warmer with a 0.71°C increased temperature than the mean annual temperature of the past 20 yr. Second, a new dengue virus serotype, DENV-4, had recently reintroduced/reappeared in 2022 and become the dominant serotype in the country for a large naïve population. Third, the post-pandemic return of normalcy after 2 yr of nonpharmaceutical social measures facilitates extra mosquito breeding habitats, especially in construction sites. Community engagement and regular monitoring and destruction of Aedes mosquitoes' habitats should be prioritized to control dengue virus outbreaks in Bangladesh.
Identifiants
pubmed: 37202843
pii: 7172758
doi: 10.1093/jme/tjad057
pmc: PMC10337852
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
847-852Subventions
Organisme : Department of Health
Pays : United Kingdom
Informations de copyright
© The Author(s) 2023. Published by Oxford University Press on behalf of Entomological Society of America.
Références
Curr Res Parasitol Vector Borne Dis. 2021 Nov 26;1:100063
pubmed: 35284868
Ecohealth. 2022 Sep;19(3):378-389
pubmed: 35948736
Virusdisease. 2018 Sep;29(3):303-307
pubmed: 30159364
New Microbes New Infect. 2022 Jun 17;48:100996
pubmed: 35847386
PLoS One. 2019 Aug 15;14(8):e0221179
pubmed: 31415663
Front Cell Infect Microbiol. 2021 Aug 10;11:681937
pubmed: 34447698
Vector Borne Zoonotic Dis. 2007 Spring;7(1):76-85
pubmed: 17417960
PLoS Negl Trop Dis. 2018 Nov 15;12(11):e0006947
pubmed: 30439942
Sci Rep. 2017 Aug 15;7(1):8175
pubmed: 28811576
PLoS One. 2021 Sep 14;16(9):e0257460
pubmed: 34520486
Am J Med Genet. 1997 Nov 28;73(1):1-4
pubmed: 9375913
Science. 2013 Oct 25;342(6157):415
pubmed: 24159024
Am J Trop Med Hyg. 2016 Jun 1;94(6):1359-61
pubmed: 27114293
J Med Entomol. 2021 Jan 12;58(1):37-39
pubmed: 32725192
New Microbes New Infect. 2019 Feb 16;29:100511
pubmed: 30937172
Am J Trop Med Hyg. 2021 Sep 27;106(1):332-333
pubmed: 34583345
J Clin Virol. 2004 Nov;31(3):179-84
pubmed: 15465409
Afr Health Sci. 2022 Mar;22(1):521-531
pubmed: 36032477
Science. 2017 Jan 27;355(6323):395-398
pubmed: 28126818