Phenotypic and genotypic aspects of sorbitol-negative Escherichia coli isolated from cattle
Résumé
Escherichia coli especially sorbitol-negative serogroups such as O157 that produces Shiga toxin (STEC) is involved in food poisoning with severity ranging from individual cases into outbreaks that threaten human and animal health. This study aimed to evaluate phenotypic and genotypic aspects of sorbitol-negative E.coli isolated from different sources. A total of 420 samples were collected from fecal swabs and raw milk of cattle from various locations in Kafr Elsheikh government, Egypt. The prevalence of E. coli isolates was 9.3% (39/420) as was determined by bacterial culturing. The phenotype of these isolates was serologically and molecularly determined, and the results showed an overall prevalence of E. coli O157 of 23% (9/39) with a high incidence in fecal swabs samples. The multidrug resistance (MDR) phenotype as detected by antibiotic sensitivity test and confirmed by PCR revealed resistance to amoxicillin, clavulanic acid, vancomycin, ampicillin, and sulbactam with the detection of blaTEM and blaSHV MDR genes in 9 and 2 isolates, respectively. Virulence genes (stx1, stx2, eaeA) were also detected in 1, 9, 6 isolates, respectively. With these results, we could conclude that E. coli O157 was identified in not only cattle fecal swab samples but also in their milk and subsequently this could threaten animal and human health.
Article Details
- Comment citer
-
Moawad, A., Shehawy, E., Elshayeb, T., & EL-Magd, M. (2023). Phenotypic and genotypic aspects of sorbitol-negative Escherichia coli isolated from cattle. Journal of the Hellenic Veterinary Medical Society, 74(1), 5403–5410. https://doi.org/10.12681/jhvms.29606
- Numéro
- Vol. 74 No 1 (2023)
- Rubrique
- Research Articles
Ce travail est disponible sous licence Creative Commons Attribution - Pas d’Utilisation Commerciale 4.0 International.
Authors who publish with this journal agree to the following terms:
· Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution Non-Commercial License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
· Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g. post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
· Authors are permitted and encouraged to post their work online (preferably in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.