Genotypes and phenotypes of Shiga toxin-producing Escherichia coli (STEC) in Abeokuta, Southwestern Nigeria

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2014
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Abstract
Genotypes and phenotypes of Shiga toxin-producing Escherichia coli (STEC) in Abeokuta, Southwestern Nigeria Olugbenga Adekunle Olowe,1 Bukola W Aboderin,1,2 Olayinka O Idris,3 Victor O Mabayoje,4 Oluyinka O Opaleye,1 O Catherine Adekunle,1 Rita Ayanbolade Olowe,1 Paul Akinniyi Akinduti,5 Olusola Ojurongbe1 1Department of Medical Microbiology and Parasitology, College of Health Sciences, Osogbo, Osun State, Nigeria; 2Medical Microbiology Unit, Pathology Department, Federal Medical Centre, Abeokuta, Nigeria; 3Department of Microbiology, College of Sciences, Afe Babalola University, Ado Ekiti, Nigeria; 4Department of Haematology, College of Health Sciences, Ladoke Akintola University, Osogbo, Osun State, Nigeria; 5Department of Medical Microbiology and Parasitology, Olabisi Onabanjo University, Ago-Iwoye, Ogun State, Nigeria Purpose: To characterize the prevalence of hemolytic Shiga toxin-producing Escherichia coli (STEC) with a multidrug-resistant pattern in different age groups in Abeokuta, Nigeria. Methods: Nonrepetitive E. coli isolates were collected from 202 subjects with or without evidence of diarrhea. Each isolate was biochemically identified and antimicrobial susceptibility testing was performed using the disk diffusion method. A sorbitol fermentation test of all the E. coli isolates was done and the minimum inhibitory concentration of suspected STEC was measured by the standard broth microdilution method to determine antibiotic resistance. The genotypes of stx1, stx2, and hlyA were determined by polymerase chain reaction assay. Results: The majority of subjects were aged ≥40 years (41.6%) and were female (61.9%). Of the 202 subjects, 86.1% had STEC isolates (P16 µg/mL in 13.9%, 11.4%, and 10.4% of the isolates, respectively. The prevalence of stx1, stx2, and hlyA was 13.9%, 6.9%, and 2.0%, respectively; 5.5% of stx1 were in the 0–10-year-old age group, 3.5% of stx2 were aged ≥40 and above, and 1.0% of the hlyA isolates were in the 0–10-year-old age group. Conclusion: The prevalence of virulent STEC is a public health concern. The use of polymerase chain reaction assay should aid quick detection of this virulent serotype and help curb the severe epidemic of human diseases associated with STEC infections. Keywords: STEC, resistance, stx1, stx2, hlyA, Nigeria
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olugbega2014genotypesinfection Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Olugbega Adekunle Olowe;Bukola W Aboderin;Olayinka O Idris;Victor O Mabayoje;Oluyinka O Opaleye;O Catherine Adekunle;Rita Ayanbolade Olowe;Paul Akinniyi Akinduti;Olusola Ojurongbe and
Journal Infection and drug resistance
Year 2014
DOI
10.2147/IDR.S66268
URL
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