Genotypic and phenotypic analysis of Salmonella strains associated with an outbreak of equine neonatal salmonellosis

Isolates of Salmonella choleraesuis serotype ohio ( S. ohio) recovered during an outbreak of equine neonatal salmonellosis on a Thoroughbred farm were compared with isolates of the same serotype from various animal, feed and environmental sources. Biochemical profiles, antimicrobial susceptibility p...

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Bibliographic Details
Published in:	Veterinary microbiology Vol. 43; no. 2; pp. 143 - 150
Main Authors:	Walker, R.L., de Peralta, T.L., Villanueva, M.R., Snipes, K.P., Madigan, J.E., Hird, D.W., Kasten, R.W.
Format:	Journal Article
Language:	English
Published:	Amsterdam Elsevier B.V 01-02-1995 Elsevier Science
Subjects:	Animal bacterial diseases Animals Bacterial diseases Bacteriology Bacteriophages - isolation & purification Biological and medical sciences CABALLOS CHEVAL Disease Outbreaks - veterinary DNA Restriction Enzymes - analysis DNA, Bacterial EPIDEMIA EPIDEMICS EPIDEMIE Epidemiology Female FENOTIPOS Fundamental and applied biological sciences. Psychology GENOTIPOS GENOTYPE GENOTYPES Horse Horse Diseases - epidemiology Horse Diseases - microbiology HORSES Infectious diseases Medical sciences Microbial Sensitivity Tests - veterinary Microbiology Neonatal septicemia PHENOTYPE PHENOTYPES Plasmids - analysis SALMONELLA Salmonella - genetics Salmonella choleraesuis Salmonella Infections, Animal - epidemiology Salmonella Infections, Animal - microbiology Salmonella ohio United States North America America Neonatal septicemia Salmonella ohio Horse Typing Septicemia Epidemiology Infection Case study Vertebrata Mammalia Newborn animal Salmonella choleraesuis Bacteriosis Digestive diseases Bacteria Salmonellosis Perissodactyla Ungulata Enterobacteriaceae
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Summary:	Isolates of Salmonella choleraesuis serotype ohio ( S. ohio) recovered during an outbreak of equine neonatal salmonellosis on a Thoroughbred farm were compared with isolates of the same serotype from various animal, feed and environmental sources. Biochemical profiles, antimicrobial susceptibility patterns, phage susceptibility, plasmid profiles, restriction endonuclease analysis and ribotyping were used to compare relatedness of the strains. A total of 46 outbreak and non-outbreak associated isolates of S. ohio were studied. Differences in antimicrobial susceptibility patterns, phage susceptibility and plasmid profiles were useful for differentiating outbreak isolates from other equine isolates as well as bovine, porcine and some poultry isolates. Feed and other poultry isolates, most in geographic proximity to the outbreak, were indistinguishable from outbreak isolates by any of the methods employed. Investigative studies on the farm along with results of genotypic and phenotypic analysis of isolates suggested that contaminated feed was the most likely source of Salmonella in this outbreak.
Bibliography:	9503349 L73 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2
ISSN:	0378-1135 1873-2542
DOI:	10.1016/0378-1135(94)00088-E