A long-term study on the prevalence of shiga toxin-producing Escherichia coli (STEC) on four German cattle farms

The occurrence of Shiga toxin-producing Escherichia coli (STEC) was studied on four cattle farms. STEC were detected in 29–82% of the cattle. STEC with additional EHEC markers were detected on all farms. The occurrence of the complete virulence marker pattern (stx1 and/or stx2, eae, EHEChlyA, katP,...

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Bibliographic Details
Published in:Epidemiology and infection 2002-08, Vol.129 (1), p.173-185
Main Authors: GEUE, L., SEGURA-ALVAREZ, M., CONRATHS, F. J., KUCZIUS, T., BOCKEMÜHL, J., KARCH, H., GALLIEN, P.
Format: Article
Language:English
Subjects:
Animals
Bacteriology
Beef cattle
Biological and medical sciences
Biomarkers
Calves
Cattle
Cattle - microbiology
Dairy cattle
Diarrhea
E coli
Epidemiology
Escherichia coli
Escherichia coli - classification
Escherichia coli - isolation & purification
Escherichia coli - pathogenicity
Escherichia coli O157
Farms
Fundamental and applied biological sciences. Psychology
Infections
Investigations
Microbial Sensitivity Tests
Microbiology
Milk
Pathogenicity, virulence, toxins, bacteriocins, pyrogens, host-bacteria relations, miscellaneous strains
Pneumonia
Prevalence
Serotyping
Shiga Toxin - biosynthesis
Shiga toxins
Virulence
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Summary:The occurrence of Shiga toxin-producing Escherichia coli (STEC) was studied on four cattle farms. STEC were detected in 29–82% of the cattle. STEC with additional EHEC markers were detected on all farms. The occurrence of the complete virulence marker pattern (stx1 and/or stx2, eae, EHEChlyA, katP, espP) was correlated with the presence of known STEC serotypes. STEC O26[ratio ]H11 and O165[ratio ]H25 with the complete pattern of virulence markers were the most prevalent. STEC O157 (H7/H-) STEC O103[ratio ]H2 and STEC O145[ratio ]H- were found sporadically. Five clonal subgroups of the STEC O26[ratio ]H11 isolates were identified by pulsed-field gel electrophoresis. STEC O26[ratio ]H11 were present in three groups of cattle. This serotype was detected in a single group over the entire fattening period. Most STEC O26[ratio ]H11 with the complete pattern of potential virulence markers were found in clinically healthy cattle. These animals may represent a risk factor for farmers and consumers.
ISSN:0950-2688
1469-4409
DOI:10.1017/S0950268802007288