[Bacteremia caused by Vibrio cholerae non-O1/non-O139 carrying a region homologous to pathogenicity island VpaI-7]

Rev Chilena Infectol. 2019 Jun;36(3):392-395. doi: 10.4067/S0716-10182019000300392.
[Article in Spanish]

Abstract

We report a case of V. cholerae non-O1 / non-O139 bacteremia in an 81-year-old woman with abdominal pain, fever, vomiting, liquid stools, choluria and jaundice, while visiting a rural area without access to potable water. The identification was made by the MALDI-TOF mass spectrometry technique and subsequently the non-toxigenic non-O1 / non-139 strain was confirmed in the national reference laboratory. The molecular characterization demonstrated the absence of the cholera toxin gene (CTX), and the TCP pilus, however, presented 5 of 6 virulence genes present in an island of homologous pathogenicity named VPaI-7 of V. parahaemolyticus (vcs N2 +, vcs C2 +, vcs V2 +, toxR-, vspD +, T vopF +) and in addition it was positive for hylAy rtxA virulence genes recognized outside the island. This is the first case reported in Chile of a clinical strain of V. cholerae non-O1, non-O139 isolated from blood culture that carries in its genome a homologous segment of the pathogenicity island named VPaI-7 of V. parahaemolyticus, which codifies for a type III secretion system (TTSS) that probably contributes to his virulence.

Publication types

  • Case Reports

MeSH terms

  • Aged, 80 and over
  • Bacteremia* / etiology
  • Bacterial Proteins / chemistry*
  • Bacterial Proteins / isolation & purification
  • Cholera / complications
  • Cholera / microbiology
  • Female
  • Genomic Islands
  • Humans
  • Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
  • Vibrio cholerae / chemistry*
  • Vibrio cholerae / isolation & purification
  • Vibrio cholerae / pathogenicity
  • Vibrio cholerae non-O1 / chemistry*
  • Vibrio cholerae non-O1 / isolation & purification
  • Vibrio cholerae non-O1 / pathogenicity
  • Virulence

Substances

  • Bacterial Proteins