Ecuadorian mainland industrial poultry production is free of H5/H7 Avian influenza virus: National surveillance program in 2016

J Vet Med Sci. 2019 Nov 29;81(11):1597-1600. doi: 10.1292/jvms.19-0253. Epub 2019 Oct 1.

Abstract

Avian influenza (AI) is a disease caused by influenza viruses type A that belong to the Orthomyxoviridae family. AI induces high economic losses in poultry production worldwide. Due to a possible outbreak, a national surveillance program was needed. From April to July 2016, 152 industrial poultry farms were randomly sampled. All samples were analyzed by competitive ELISA for Influenza type A viruses. Suspicious and positive sera were further analyzed by Hemagglutination Inhibition (HI) in order to serotype H5 or H7 low pathogenic avian influenza virus (LPAIV). The farms sampled showed 94.08%, 3.95% and 1.97% of negative, positive and suspicious results, respectively. However, serotyping revealed all positive and suspicious samples were negative to H5/H7 LPAIV. Our results show the absence of AI in the mainland Ecuadorian industrial poultry production.

Keywords: Ecuador; broiler; high pathogenicity avian influenza; laying hens; low pathogenicity avian influenza.

MeSH terms

  • Animals
  • Cross-Sectional Studies
  • Ecuador / epidemiology
  • Enzyme-Linked Immunosorbent Assay / veterinary
  • Hemagglutination Inhibition Tests / veterinary
  • Influenza A virus / isolation & purification*
  • Influenza in Birds / epidemiology*
  • Poultry
  • Poultry Diseases / epidemiology*
  • Poultry Diseases / virology
  • Seroepidemiologic Studies