High-level genotypic variation and antibiotic sensitivity among Escherichia coli O157 strains isolated from two Scottish beef cattle farms
Article Abstract:
The characterization and population genetics of Escherichia coli O157 in a series of longitudinal studies of cattle on two farms in Scotland is studied in detail and reported. Results showed a high variation among strains of E.coli in just two farms in the same vicinity over a 2-year period. The studies demonstrated resistance of the strains to sulfamethoxazole, chloramphenicol and at a lower rate, other antibiotics, indicating the preservation of antibiotic sensitivity in a rapidly changing population of E.coli O157.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2004
User Contributions:
Comment about this article or add new information about this topic:
Age-related decline in carriage of ampicillin-resistant Escherichia coli in young calves
Article Abstract:
Comparison of the carriage of ampicillin-resistant Escherichia coli with age and time in multiple cohorts of calves sampled monthly from birth on four farms is done. The presence of ampicillin-resistant E.coli in older cattle on all farms suggests that in some calves the decline is transient, with cattle reacquiring resistant bacteria at a later point due to environmental changes or management events on the farm.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2004
User Contributions:
Comment about this article or add new information about this topic:
Molecular epidemiology of antimicrobial-resistant commensal Escherichia coli strains in a cohort of newborn calves
Article Abstract:
A unique view of the microbial ecology of an antimicrobial-resistant commensal Escherichia coli population within a large cohort of calves monitored intensively from birth is presented. Results reveal that calves are colonized by a succession of multiply resistant strains, with a probable environmental source, that disseminated through the cohort over time.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Phylogeny and strain typing of Escherichia coli, inferred from variation at mononucleotide repeat loci. Vibrio cholerae hemagglutinin/protease degrades chironomid egg masses
- Abstracts: Shedding patterns of verocytotoxin-producing Escherichia coli strains in a cohort of calves and their dams on a Scottish beef farm
- Abstracts: Molecular epidemiology of ceftiofur-resistant Escherichia coli isolates from dairy calves. Multi-virulence-locus sequence typing of Listeria monocytogenes
- Abstracts: Allelic variation of polymorphic locus lytB, encoding a choline-binding protein, from Streptococci of the mitis group
- Abstracts: Frequency and distribution of tetracycline resistance genes in genetically diverse, nonselected, and nonclinical Escherichia coli strains isolated from diverse human and animal sources