Back to Search
Start Over
Extended-spectrum β-lactamase, shigatoxin and haemolysis capacity of O157 and non-O157 E. coli serotypes from producer-distributor bulk milk
- Source :
- International Dairy Journal. 66:126-134
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- We investigated for virulence genes ( stx1 , stx2 and hlyA ), serotypes and extended-spectrum β-lactamases (ESBLs) producing capacity in O157 and non-O157 Escherichia coli isolated from producer-distributor bulk milk (PDBM). Fifteen different E. coli O-serogroups were observed from the isolates (n = 121). The prevalence of stx1 and stx2 genes among the E. coli isolates was 8.3% and 11.6%, respectively, while 5.8% harboured both stx1 and stx2 . Four E. coli isolates (3.3%) had ESBLs producing capacity, resisted multiple cephalosporins and aztreonam, and carried stx genes. Cluster analysis using GTG 5 finger printing revealed a diversity of E. coli seropathotypes in PDBM that are known to be associated with human diarrhoeal diseases. These results highlight a potential risk posed on human health by the consumption of PDBM contaminated with pathogenic E. coli . A further quantitative risk assessment of the impact of pathogenic E. coli contamination in PDBM on human health is therefore recommended.
- Subjects :
- 0301 basic medicine
Serotype
medicine.drug_class
030106 microbiology
Cephalosporin
Virulence
Aztreonam
biochemical phenomena, metabolism, and nutrition
Biology
bacterial infections and mycoses
Haemolysis
medicine.disease_cause
Applied Microbiology and Biotechnology
Non o157
Microbiology
03 medical and health sciences
chemistry.chemical_compound
fluids and secretions
030104 developmental biology
chemistry
STX2
medicine
bacteria
Escherichia coli
Food Science
Subjects
Details
- ISSN :
- 09586946
- Volume :
- 66
- Database :
- OpenAIRE
- Journal :
- International Dairy Journal
- Accession number :
- edsair.doi...........5568bde299c60a1cbdc25dc7a2743477