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    Dengue viruses in Papua New Guinea: Evidence of endemicity and phylogenetic variation, including the evolution of new genetic lineages

    Access Status
    Fulltext not available
    Authors
    Moore, P.
    Van Den Hurk, A.
    Mackenzie, John
    Pyke, A.
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Moore, P. and Van Den Hurk, A. and Mackenzie, J. and Pyke, A. 2017. Dengue viruses in Papua New Guinea: Evidence of endemicity and phylogenetic variation, including the evolution of new genetic lineages. Emerging Microbes and Infections. 6 (12): pp. 1-12.
    Source Title
    Emerging Microbes and Infections
    DOI
    10.1038/emi.2017.103
    ISSN
    2222-1751
    School
    Health Sciences Research and Graduate Studies
    URI
    http://hdl.handle.net/20.500.11937/69101
    Collection
    • Curtin Research Publications
    Abstract

    © The Author(s) 2017. Dengue is the most common cause of mosquito-borne viral disease in humans, and is endemic in more than 100 tropical and subtropical countries. Periodic outbreaks of dengue have been reported in Papua New Guinea (PNG), but there is only limited knowledge of its endemicity and disease burden. To help elucidate the status of the dengue viruses (DENVs) in PNG, we performed envelope (E) gene sequencing of DENV serotypes 1-4 (DENV 1-4) obtained from infected patients who traveled to Australia or from patients diagnosed during local DENV transmission events between 2001 and 2016. Phylogenetic analysis and comparison with globally available DENV sequences revealed new endemic PNG lineages for DENV 1-3 which have emerged within the last decade. We also identified another possible PNG lineage for DENV-4 from 2016. The DENV-1 and 3 PNG lineages were most closely related to recent lineages circulating on Pacific island nations while the DENV-2 lineage and putative DENV-4 PNG lineage were most similar to Indonesian sequences. This study has demonstrated for the first time the co-circulation of DENV 1-4 strains in PNG and provided molecular evidence of endemic DENV transmission. Our results provide an important platform for improved surveillance and monitoring of DENVs in PNG and broaden the global understanding of DENV genetic diversity.

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