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Volume 4, Issue 3

Cholera outbreak: antibiofilm activity, profiling of antibiotic-resistant genes and virulence factors of toxigenic isolates reveals concerning traits Open Access

Abstract

is a biofilm-forming pathogen with various virulence phenotypes and antimicrobial resistance traits. Phenotypic characteristics play a critical role in disease transmission and pathogenesis. The current study elucidated antibiofilm formation activity, profiled antibiotic-resistant genes and virulence factors of toxigenic isolates from the cholera outbreak in Kisumu County, Kenya. O1 isolates collected during the 2017 cholera outbreak in Kisumu County, Kenya, were utilized. Biofilm and virulence factors were profiled using standard procedures. The study confirmed 100 isolates as , with 81 of them possessing cholera toxin gene (). Additionally, 99 of the isolates harboured the gene. The study further revealed that 81 and 94 of the isolates harboured the class I integron (encoded by gene) and integrating conjugative element (ICE), respectively. Antibiotic resistance assays confirmed tetracycline resistance genes as the most abundant (97 isolates). Among them were seven isolates resistant to commonly used antibiotics. The study further screened the isolates for antibiofilm formation using various antibiotics. Unlike the four strains (), three of the strains ( and ) did not form biofilms. Further, all the seven isolates that exhibited extensive antibiotic resistance produced haemolysin while 71.42%, 85.71 and 71.42 % of them produced protease, phospholipases and lipase, respectively. This study provides and in-depth understanding of essential features that were possibly responsible for outbreak. Understanding of these features is critical in the development of strategies to combat future outbreaks.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): antibiofilm activity , antibiotics , resistant genes profiling , Vibrio cholerae and virulence factors
© 2022 The Authors
  • This is an open-access article distributed under the terms of the Creative Commons Attribution License.
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2022-03-23
2024-04-26
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Cholera outbreak: antibiofilm activity, profiling of antibiotic-resistant genes and virulence factors of toxigenic Vibrio cholerae isolates reveals concerning traits
Access Microbiology 4, 000324 (2022); https://doi.org/10.1099/acmi.0.000324
/content/journal/acmi/10.1099/acmi.0.000324
/content/journal/acmi/10.1099/acmi.0.000324
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