Molecular epidemiology of endemic and very virulent infectious bursal disease virus genogroups in backyard chickens in California, 2009–2017

Simone T. Stoute, Daral J. Jackwood, Beate M. Crossley, Linda O. Michel, Julia R. Blakey

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Pathogenic strains of infectious bursal disease virus (IBDV) are associated with increased morbidity, mortality, and immunosuppression in susceptible chickens. Backyard poultry is increasing in popularity in the United States, but very little is known about the prevalence and molecular epidemiology of IBDV within these flocks. We performed a retrospective study and phylogenetic analyses of IBDV detected in backyard chickens (BYCs) submitted to the California Animal Health and Food Safety (CAHFS) diagnostic laboratory system in 2009–2017. There were 17 CAHFS autopsy cases of very virulent IBDV (vvIBDV) segment A detected by RT-rtPCR in BYC flocks from 7 counties in California from 2009–2017. During this same time period, non-vvIBDV genotypes were detected by RT-rtPCR in 16 autopsy cases originating from BYC premises in 10 counties in California. Subsequent RT-PCR and phylogenetic analysis of a segment of the hvVP2 and VP1 gene identified vvIBDV, interserotypic reassortant IBDV (vvIBDV segment A and serotype 2 segment B), and non-vvIBDV (variant/subclinical IBDV and classic IBDV) strains in BYC flocks in California.

Original languageEnglish (US)
JournalJournal of Veterinary Diagnostic Investigation
DOIs
StatePublished - Jan 1 2019

Keywords

  • Backyard chickens
  • genogroup
  • infectious bursal disease virus
  • molecular epidemiology

ASJC Scopus subject areas

  • veterinary(all)

Fingerprint Dive into the research topics of 'Molecular epidemiology of endemic and very virulent infectious bursal disease virus genogroups in backyard chickens in California, 2009–2017'. Together they form a unique fingerprint.

  • Cite this