Evaluation of a new chromogenic medium, chromID™ Vibrio, for the isolation and presumptive identification of and from human clinical specimens

R. Eddabra (1) , Y. Piemont (1) , J. M. Scheftel (1)

1 UPRES EA-4438, Physiopathologie et Médecine Translationnelle, Laboratoire de Bactériologie de la Faculté de Médecine

The aim of this study was to evaluate the performance of the chromID™ Vibrio medium for the detection of and in stool and swab specimens in comparison with thiosulfate citrate bile salts sucrose (TCBS) medium. A total of 96 samples including 30 fresh stool, 32 stool, and 34 swab specimens originating from routine laboratories were tested. All samples were seeded on both media, the TCBS medium and the chromID Vibrio, directly and after an enrichment step on alkaline peptone water. Of the 96 samples studied, 34 were positive for and 30 were positive for . The sensitivity for the isolation of in fresh stool specimens was identical for both media, 78.5% and 100% before and after enrichment, respectively. However, positive test with chromID Vibrio concluded immediately to the presence of . In the case of artificial contaminations, the sensitivity of chromID Vibrio was more important than TCBS after enrichment for and for before and after enrichment. In fresh stool specimens, the specificity of chromID Vibrio for screening was significantly higher than TCBS (100% and 100% compared to 50% and 50% before and after enrichment, respectively) and was important for (100% chromID Vibrio; 93.33% TCBS).

Mots clés: ChromID Vibrio; Clinical specimens; TCBS

Domaines: Maladies infectieuses

R. Eddabra, Y. Piemont, J. M. Scheftel. Evaluation of a new chromogenic medium, chromID™ Vibrio, for the isolation and presumptive identification of and from human clinical specimens. European Journal of Clinical Microbiology and Infectious Diseases, 2011, 30 (6), pp.733-737. ⟨10.1007/s10096-010-1145-2⟩. ⟨hal-00687022⟩