pathology and diagnosis of avian bornavirus infection in wild canada geese (branta canadensis), trumpeter swans (cygnus buccinator) and mute swans (cygnus olor) in canada: a retrospective study.nine hundred and fifty-five pathology cases collected in ontario between 1992 and 2011 from wild free-ranging canada geese, trumpeter swans and mute swans were retrospectively evaluated for the pathology associated with avian bornavirus (abv) infection. cases were selected based on the presence of upper gastrointestinal impaction, central nervous system histopathology or clinical history suggestive of abv infection. the proportion of birds meeting at least one of these criteria was significantly ...201323581438
Displaying items 1 - 1 of 1