Bacillus cereus infection outbreak in captive psittacines

Bacillus cereus infection outbreak in captive psittacines

This study reports an uncommon epizootic outbreak of Bacillus cereus that caused the sudden death of 12 psittacines belonging to the species Anodorhynchus hyacinthinus (1 individual), Diopsittaca nobilis (1 individual), Ara severa (1 individual) and Ara ararauna (9 individuals) in a Brazilian zoo. P...

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Bibliographic Details
Published in:Veterinary microbiology Vol. 161; no. 1-2; pp. 213 - 217
Main Authors: Godoy, S.N., Matushima, E.R., Chaves, J.Q., Cavados, C.F.G., Rabinovitch, L., Teixeira, R.H.F., Nunes, A.L.V., Melville, P., Gattamorta, M.A., Vivoni, A.M.
Format: Journal Article
Language:English
Published: Amsterdam Elsevier B.V 28-12-2012
Elsevier
Subjects:
Animals
Animals, Zoo
Anodorhynchus hyacinthinus
Ara ararauna
Ara severa
Bacillus cereus
Bacillus cereus - genetics
Bacillus cereus - isolation & purification
Bacillus cereus - metabolism
Bacillus cereus - physiology
Bacteriology
Biological and medical sciences
Bird Diseases - epidemiology
Bird Diseases - microbiology
Bird Diseases - pathology
Brazil
Captive psittacines
Disease Outbreaks
Enterotoxins
Enterotoxins - genetics
Fundamental and applied biological sciences. Psychology
Genetic Variation
Gram-Positive Bacterial Infections - epidemiology
Gram-Positive Bacterial Infections - pathology
Gram-Positive Bacterial Infections - veterinary
Microbiology
Miscellaneous
Molecular typing
Outbreak
Polymerase Chain Reaction
Psittaciformes
Brazil
Molecular typing
Bacillus cereus
Outbreak
Captive psittacines
Enterotoxins
Genotype
Bacillaceae
Toxin
Bacillales
Enterotoxin
Molecular epidemiology
Bacteria
Veterinary
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Summary:This study reports an uncommon epizootic outbreak of Bacillus cereus that caused the sudden death of 12 psittacines belonging to the species Anodorhynchus hyacinthinus (1 individual), Diopsittaca nobilis (1 individual), Ara severa (1 individual) and Ara ararauna (9 individuals) in a Brazilian zoo. Post-mortem examination of the animals reveled extensive areas of lung hemorrhage, hepatic congestion, hemorrhagic enteritis and cardiac congestion. Histopathological examination of the organs showed the presence of multiple foci of vegetative cells of Gram-positive bacilli associated with discrete and moderate mononuclear inflammatory cell infiltrate. Seventeen B. cereus strains isolated from blood and sterile organs of nine A. ararauna were analyzed in order to investigate the genetic diversity (assessed by Rep-PCR) and toxigenic profiles (presence of hblA, hblC and hblD; nheA, nheB and nheC as well as cytK, ces and entFM genes) of such strains. Amplification of genomic DNA by Rep-PCR of B. cereus strains generated two closely related profiles (Rep-PCR types A and B) with three bands of difference. All strains were classified as belonging to the toxigenic profile I which contained HBL and NHE gene complexes, entFM and cytK genes. Altogether, microbiological and histopathological findings and the evidence provided by the success of the antibiotic prophylaxis, corroborate that B. cereus was the causative agent of the infection that killed the birds.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0378-1135
1873-2542
DOI:10.1016/j.vetmic.2012.07.032