Molecular epidemiology of peste des petits ruminants virus emergence in critically endangered Mongolian saiga antelope and other wild ungulates.
PPR Global Eradication Programme
PPR, saiga antelope
PPRV emergence
PPRV host range
PPRV molecular epidemiology
Phylogeography
peste des petits ruminants virus
wildlife-livestock interface
Journal
Virus evolution
ISSN: 2057-1577
Titre abrégé: Virus Evol
Pays: England
ID NLM: 101664675
Informations de publication
Date de publication:
2021
2021
Historique:
received:
12
05
2021
revised:
18
06
2021
accepted:
24
06
2021
entrez:
10
11
2021
pubmed:
11
11
2021
medline:
11
11
2021
Statut:
epublish
Résumé
Peste des petits ruminants virus (PPRV) causes disease in domestic and wild ungulates, is the target of a Global Eradication Programme, and threatens biodiversity. Understanding the epidemiology and evolution of PPRV in wildlife is important but hampered by the paucity of wildlife-origin PPRV genomes. In this study, full PPRV genomes were generated from three Mongolian saiga antelope, one Siberian ibex, and one goitered gazelle from the 2016-2017 PPRV outbreak. Phylogenetic analysis showed that for Mongolian and Chinese PPRV since 2013, the wildlife and livestock-origin genomes were closely related and interspersed. There was strong phylogenetic support for a monophyletic group of PPRV from Mongolian wildlife and livestock, belonging to a clade of lineage IV PPRV from livestock and wildlife from China since 2013. Discrete diffusion analysis found strong support for PPRV spread into Mongolia from China, and phylogeographic analysis indicated Xinjiang Province as the most likely origin, although genomic surveillance for PPRV is poor and lack of sampling from other regions could bias this result. Times of most recent common ancestor (TMRCA) were June 2015 (95 per cent highest posterior density (HPD): August 2014 to March 2016) for all Mongolian PPRV genomes and May 2016 (95 per cent HPD: October 2015 to October 2016) for Mongolian wildlife-origin PPRV. This suggests that PPRV was circulating undetected in Mongolia for at least 6 months before the first reported outbreak in August 2016 and that wildlife were likely infected before livestock vaccination began in October 2016. Finally, genetic variation and positively selected sites were identified that might be related to PPRV emergence in Mongolian wildlife. This study is the first to sequence multiple PPRV genomes from a wildlife outbreak, across several host species. Additional full PPRV genomes and associated metadata from the livestock-wildlife interface are needed to enhance the power of molecular epidemiology, support PPRV eradication, and safeguard the health of the whole ungulate community.
Identifiants
pubmed: 34754511
doi: 10.1093/ve/veab062
pii: veab062
pmc: PMC8570150
doi:
Types de publication
Journal Article
Langues
eng
Pagination
veab062Subventions
Organisme : Wellcome Trust
Pays : United Kingdom
Informations de copyright
© The Author(s) 2021. Published by Oxford University Press.
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