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Avian Virology
New genotype of avian bornavirus in wild geese and trumpeter swans in Canada
  1. Pauline Delnatte1,
  2. Charlene Berkvens1,
  3. Maya Kummrow1,
  4. Dale A. Smith1,
  5. Doug Campbell2,
  6. Graham Crawshaw3,
  7. Davor Ojkic4 and
  8. Josepha DeLay4
  1. Ontario Veterinary College, University of Guelph, 50 Stone Road, Guelph, Ontario, N1G 2W1, Canada
  2. Canadian Cooperative Wildlife Health Centre, University of Guelph, 50 Stone Road, Guelph, Ontario, N1G 2W1, Canada
  3. Toronto Zoo, 361A Old Finch Avenue, Toronto, Ontario, M1B 5K7, Canada
  4. Animal Health Laboratory, University of Guelph, 95 Stone Road West, Guelph, Ontario, N1H 8J7, Canada
  1. e-mail: dalesmit{at}

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AVIAN bornavirus (ABV), a newly discovered agent, has been identified as the causal agent of proventricular dilation disease (PDD) in psittacine birds (Honkavuori and others 2008, Kistler and others 2008). Subsequent research, including bird inoculation studies (Gancz and others 2009, Gray and others 2010) and outbreak investigations (Kistler and others 2010) have provided strong supporting evidence. PDD is a significant pathological syndrome, with high mortality affecting primarily psittacine birds, that has been reported worldwide since the late 1970s. Characteristic pathological findings of PDD …

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