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Related Experiment Video

Updated: Feb 27, 2026

Development of a More Sensitive and Specific Chromogenic Agar Medium for the Detection of Vibrio parahaemolyticus and Other Vibrio Species

Development of a More Sensitive and Specific Chromogenic Agar Medium for the Detection of Vibrio parahaemolyticus and Other Vibrio Species

Published on: November 8, 2016

Evaluation of a selective chromogenic medium for detecting vancomycin-resistant enterococci.

Renata Oliveira Soares¹, Adriana Medianeira Rossato¹, Gustavo Enck Sambrano¹

¹Federal University of Health Sciences of Porto Alegre, Porto Alegre, RS, Brazil.

Brazilian Journal of Microbiology : [Publication of the Brazilian Society for Microbiology]

|June 25, 2017

Summary

Rapidly identifying vancomycin-resistant enterococci (VRE) is crucial for treatment and infection control. However, the chromID™ VRE agar demonstrated high sensitivity but poor specificity in a recent study.

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Last Updated: Feb 27, 2026

Development of a More Sensitive and Specific Chromogenic Agar Medium for the Detection of Vibrio parahaemolyticus and Other Vibrio Species

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Published on: March 3, 2023

Area of Science:

Clinical microbiology
Infectious diseases
Diagnostic testing

Background:

Vancomycin-resistant enterococci (VRE) pose a significant threat in healthcare settings.
Prompt VRE detection is vital for effective patient management and preventing nosocomial infections.

Purpose of the Study:

To evaluate the diagnostic performance of chromID™ VRE agar for the rapid identification of VRE.
To assess the sensitivity and specificity of this selective agar medium.

Main Methods:

The chromID™ VRE agar was tested with 184 clinical isolates of Enterococcus species.
Performance was assessed using a panel of Enterococcus spp. and recognized reference strains.

Main Results:

The chromID™ VRE agar exhibited a high sensitivity of 95.52% for VRE detection.
The test displayed a low specificity of 30%, indicating a high rate of false positives.

Conclusions:

While chromID™ VRE agar is effective in detecting VRE, its low specificity limits its utility as a standalone diagnostic tool.
Further confirmatory testing is recommended when using this medium to avoid misidentification and inappropriate clinical decisions.