A long-term study on the prevalence of shiga toxin-producing Escherichia coli (STEC) on four German cattle farms
| Autor: | Helge Karch, P. Gallien, J. Bockemühl, Franz Josef Conraths, M. Segura-Alvarez, Thorsten Kuczius, Lutz Geue |
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| Rok vydání: | 2002 |
| Předmět: |
Serotype
Epidemiology animal diseases Virulence Microbial Sensitivity Tests medicine.disease_cause Shiga Toxin Microbiology fluids and secretions STX2 Escherichia coli Prevalence medicine Animals Serotyping Shiga toxin-producing Escherichia coli biology Toxin biochemical phenomena metabolism and nutrition bacterial infections and mycoses biology.organism_classification Enterobacteriaceae Infectious Diseases Long term learning bacteria Cattle Biomarkers Research Article |
| Zdroj: | Epidemiology and Infection. 129:173-185 |
| ISSN: | 1469-4409 0950-2688 |
| DOI: | 10.1017/s0950268802007288 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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