Swine influenza viruses in Northern Vietnam in 2013–2014

Baudon Eugénie, Chu Daniel K.W., Tung Dao Duy, Thi Nga Pham, Vu Mai Phuong Hoang, Le Khanh Hang Nguyen, Thanh Le Thi, Thuy Nguyen Thanh, Khanh Nguyen Cong, Mai Lê Quynh, Khong Nguyen Viet, Cowling Benjamin John, Peyre Marie-Isabelle, Peiris Malik. 2018. Swine influenza viruses in Northern Vietnam in 2013–2014. Emerging Microbes and Infections, 7 (1) : pp. 1-16.

Journal article ; Article de recherche ; Article de revue à facteur d'impact Revue en libre accès total
Published version - Anglais
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Quartile : Q1, Sujet : MICROBIOLOGY / Quartile : Q1, Sujet : IMMUNOLOGY

Abstract : Swine are an important intermediate host for emergence of pandemic influenza. Vietnam is the largest swine producer in South East Asia. Systematic virological and serological surveillance of swine influenza viruses was carried out in Northern Vietnam from May 2013 to June 2014 with monthly sampling of pigs in local and large collective slaughterhouses and in a live pig market. Influenza A seroprevalence in the local slaughterhouses and in the large collective slaughterhouse was 48.7% and 29.1%, respectively. Seventy-seven influenza A viruses were isolated, all from the large collective slaughterhouse. Genetic analysis revealed six virus genotypes including H1N1 2009 pandemic (H1N1pdm09) viruses, H1N2 with H1 of human origin, H3N2 and H1N1pdm09 reassortants, and triple-reassortant H3N2 viruses. Phylogenetic analysis of swine and human H1N1pdm09 viruses showed evidence of repeated spill-over from humans to swine rather than the establishment of H1N1pdm09 as long-term distinct lineage in swine. Surveillance at the large collective slaughterhouse proved to be the most efficient, cost-effective, and sustainable method of surveillance for swine influenza viruses in Vietnam.

Mots-clés Agrovoc : Influenzavirus porcin, Virus, Génotype, Abattoir, zoonose, Surveillance épidémiologique

Mots-clés géographiques Agrovoc : Viet Nam, Asie du Sud-Est

Mots-clés libres : Influenza, Surveillance, Vietnam

Classification Agris : L73 - Animal diseases
000 - Other themes
E16 - Production economics

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

Auteurs et affiliations

  • Baudon Eugénie, University of Hong Kong (CHN)
  • Chu Daniel K.W., University of Hong Kong (CHN)
  • Tung Dao Duy, National Institute of Veterinary Research (VNM)
  • Thi Nga Pham, National Institute of Veterinary Research (VNM)
  • Vu Mai Phuong Hoang, NIHE (VNM)
  • Le Khanh Hang Nguyen, NIHE (VNM)
  • Thanh Le Thi, NIHE (VNM)
  • Thuy Nguyen Thanh, NIHE (VNM)
  • Khanh Nguyen Cong, NIHE (VNM)
  • Mai Lê Quynh, NIHE (VNM)
  • Khong Nguyen Viet, National Institute of Veterinary Research (VNM)
  • Cowling Benjamin John, University of Hong Kong (CHN)
  • Peyre Marie-Isabelle, CIRAD-BIOS-UMR ASTRE (FRA) ORCID: 0000-0002-0887-3418
  • Peiris Malik, University of Hong Kong (CHN) - auteur correspondant

Source : Cirad-Agritrop (

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