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Molecular epidemiology and evolutionary characteristics of dengue virus 2 in East Africa

Author

Listed:
  • Sindiso Nyathi

    (Stanford University School of Medicine)

  • Izabela M. Rezende

    (Stanford University School of Medicine)

  • Katharine S. Walter

    (University of Utah)

  • Panpim Thongsripong

    (University of Florida)

  • Francis Mutuku

    (Technical University of Mombasa)

  • Bryson Ndenga

    (Kenya Medical Research Institute)

  • Joel O. Mbakaya

    (Kenya Medical Research Institute)

  • Peter Aswani

    (Kenya Medical Research Institute)

  • Peter S. Musunzaji

    (Msambweni Hospital)

  • Philip K. Chebii

    (Msambweni Hospital)

  • Priscilla W. Maina

    (Msambweni Hospital)

  • Paul S. Mutuku

    (Msambweni Hospital)

  • Charles M. Ng’ang’a

    (Msambweni Hospital)

  • Said L. Malumbo

    (Msambweni Hospital)

  • Zainab Jembe

    (Diani Health Center)

  • David M. Vu

    (Stanford University)

  • Erin A. Mordecai

    (Stanford University)

  • Shannon Bennett

    (55 Music Concourse Drive)

  • Jason R. Andrews

    (Stanford University School of Medicine)

  • A. Desiree LaBeaud

    (Stanford University)

Abstract

Despite the increasing burden of dengue, the regional emergence of the virus in Kenya has not been examined. This study investigates the genetic structure and regional spread of dengue virus-2 in Kenya. Viral RNA from acutely ill patients in Kenya was enriched and sequenced. Six new dengue-2 genomes were combined with 349 publicly available genomes and phylogenies used to infer gene flow between Kenya and other countries. Analyses indicate two dengue-2 Cosmopolitan genotype lineages circulating in Kenya, linked to recent outbreaks in coastal Kenya and Burkina Faso. Lineages circulating in Western, Southern, and Eastern Africa exhibiting similar evolutionary features are also reported. Phylogeography suggests importation of dengue-2 into Kenya from East and Southeast Asia and bidirectional geneflow. Additional lineages circulating in Africa are also imported from East and Southeast Asia. These findings underscore how intermittent importations from East and Southeast Asia drive dengue-2 circulation in Kenya and Africa more broadly.

Suggested Citation

  • Sindiso Nyathi & Izabela M. Rezende & Katharine S. Walter & Panpim Thongsripong & Francis Mutuku & Bryson Ndenga & Joel O. Mbakaya & Peter Aswani & Peter S. Musunzaji & Philip K. Chebii & Priscilla W., 2024. "Molecular epidemiology and evolutionary characteristics of dengue virus 2 in East Africa," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-51018-0
    DOI: 10.1038/s41467-024-51018-0
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    References listed on IDEAS

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    1. Samir Bhatt & Peter W. Gething & Oliver J. Brady & Jane P. Messina & Andrew W. Farlow & Catherine L. Moyes & John M. Drake & John S. Brownstein & Anne G. Hoen & Osman Sankoh & Monica F. Myers & Dylan , 2013. "The global distribution and burden of dengue," Nature, Nature, vol. 496(7446), pages 504-507, April.
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