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The incidence of virulence factors in mesophilic Aeromonas species isolated from farm animals and their environment

Published online by Cambridge University Press:  15 May 2009

S. J. Gray ,
D. J. Stickler  and
T. N. Bryant
S. J. Gray
Affiliation:
Public Health Laboratory Service, University Hospital of Wales, Heath Park, Cardiff CF4 4XW
D. J. Stickler
Affiliation:
School of Pure and Applied Biology, University of Wales College of Cardiff, P.O. Box 13, Cardiff CF1 3XF
T. N. Bryant
Affiliation:
Medical Statistics and Computing, University of Southampton, South Academic Block, Southampton General Hospital, Southampton S09 4XY
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Sixty-one isolates of Aeromonas spp. from the faeces of pigs, cows and a variety of associated environmental sources were examined for the characteristics that are reputed to have roles in pathogenicity. Most isolates of Aeromonas hydrophila were cytotoxic (96·4%) and were capable of producing cell elongation factor (75%) and haemagglutinins (67·9%). In contrast few of the Aeromonas caviae isolates produced these three markers (13·6 %, 27·3% and 36·4% respectively). In general, Aeromonas sobria occupied an intermediate position (36·4%, 27·3% and 54·5%), but they did produce the highest mean invasion index for HEp-2 cells. Statistical analysis revealed significant associations between the carriage of these factors and it was clear that many isolates of aeromonads from water and animals possessed the full battery of putative virulence factors.

Type
Research Article
Information
Epidemiology & Infection , Volume 105 , Issue 2 , October 1990 , pp. 277 - 294
Copyright
Copyright © Cambridge University Press 1990

References

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