High prevalence of Vibrio cholerae non-O1 carrying heat-stable- enterotoxin-encoding genes among Vibrio isolates from a temperate-climate river basin of central italy

Gabriella Caldini, Angela Neri, Stefania Cresti, Vieri Boddi, Gian Maria Rossolini, Eudes Lanciotti

Research output: Contribution to journalArticlepeer-review

Abstract

Vibrio spp. of clinical interest from the Arno River basin (Tuscany, Italy) were investigated in this study. Vibrios were isolated from 70% of water samples. Vibrio cholerae non-O1 was the most prevalent species (82% of isolates), followed by Vibrio mimicus (10%) and Vibrio metschnikovii (8%). Recovery of vibrios was correlated with temperature, pH, and various indicators of municipal pollution. None of the 150 Vibrio isolates carried ctx-related genomic sequences, whereas 18 (14.6%) of the 123 V. cholerae non- O1 isolates and 1 (6.7%) of the 15 V. mimicus isolates carried sto alleles. These findings indicate that considerable circulation of sto-positive vibrios may occur in temperate-climate freshwater environments.

Original languageEnglish
Pages (from-to)2934-2939
Number of pages6
JournalApplied and Environmental Microbiology
Volume63
Issue number7
Publication statusPublished - Jul 1997

ASJC Scopus subject areas

  • Biotechnology
  • Environmental Science(all)
  • Microbiology

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