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Research Support, Non-U.S. Gov't
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Genome-based analysis of virulence determinants of a Serratia marcescens strain from soft tissues following a snake bite.

AIM: Serratia marcescens wound infection after snakebite is often associated with aggressive presentations. However, the virulence determinants remain understudied.

MATERIALS & METHODS: Whole-genome sequencing was performed on S. marcescens VGH107, an isolate from wound infection secondary to Trimeresurus mucrosquamatus bite. Comparative genomics approach coupled with multivirulent-locus sequencing typing was applied to systematically predict potential virulence factors.

RESULTS: Multivirulent-locus sequencing typing indicated VGH107 falls within the cluster of high pathogenic strains. Comparative analysis identified virulence genes unique in VGH107, including ecpD and ecpE genes for periplasmic chaperone-pilus subunit complex and cdiA and cdiB genes for contact-dependent growth inhibition system.

CONCLUSION: The data established here provide foundation for further research regarding the virulence and resistance of S. marcescens.

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