Molecular epidemiology of peste des petits ruminants virus in Nigeria: An update

Mantip Samuel, Sigismeau Anthony, Shamaki David, Woma Timothy Yusuf, Kwiatek Olivier, Libeau Geneviève, Farougou Souabou, Bataille Arnaud. 2022. Molecular epidemiology of peste des petits ruminants virus in Nigeria: An update. Transboundary and Emerging Diseases, 69 (3) : 1634-1640.

https://doi.org/10.1111/tbed.14073

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Résumé : Peste des Petits Ruminants (PPR) is a highly contagious viral disease that mainly affects goats and sheep in Asia, Africa, and the Middle East. The PPR virus (PPRV) can be classified into four genetically distinct lineages (I, II, III, and IV). All have been historically present in Africa, except the Asian lineage IV that has been spreading across the globe and across Africa in recent decades. Previous studies have identified the presence of lineage IV in Nigeria since 2010. In the present study, samples were taken from 429 small ruminants with PPR symptoms across Nigeria in 2017‐2020 to provide an update on the distribution and genetic diversity of PPRV in the country. Sequences from a portion of the PPRV nucleoprotein (N) gene were obtained from 91 samples, 90 belonging to lineage IV, and one to lineage II. Phylogenetic analysis identified at least four lineage IV sub‐clusters in Nigeria, grouping samples across multiple regions. Our results suggest extensive endemic circulation of a wide range of PPRV strains across Nigeria and across borders with neighbouring countries, underlining the difficulty involved in controlling the disease in the region.

Mots-clés Agrovoc : virus peste petits ruminants, peste des petits ruminants, épidémiologie, surveillance épidémiologique, maladie transfrontière, phylogénie, lignée, contrôle de maladies, distribution géographique

Mots-clés géographiques Agrovoc : Nigéria

Mots-clés libres : Distribution, Genetic diversity, Morbillivirus, Nigeria, Phylogeny, Transboundary disease

Classification Agris : L73 - Maladies des animaux
L20 - Écologie animale

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Agences de financement européennes : European Commission

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