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[A study on the disc sensitivity test for cefodizime].

Y Kanazawa¹, H Sekine, T Kuramata

¹Department of Internal Medicine, Niitsu Medical Center Hospital.

The Japanese Journal of Antibiotics

|May 1, 1992

Summary

This summary is machine-generated.

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The single-disc assay effectively determines cefodizime (CDZM) susceptibility in various bacteria, correlating well with the standard dilution method. This validates the disc assay for routine CDZM susceptibility testing.

Area of Science:

Microbiology
Bacteriology
Antimicrobial Susceptibility Testing

Context:

Cefodizime (CDZM) is a cephalosporin antibiotic requiring reliable susceptibility testing methods.
Standardized methods are crucial for accurate antimicrobial susceptibility testing (AST).
Evaluating alternative AST methods can improve efficiency and accessibility.

Purpose:

To establish and validate the single-disc assay for determining cefodizime (CDZM) susceptibility.
To correlate inhibition zone diameters from the disc assay with Minimum Inhibitory Concentrations (MICs) from the agar dilution method.
To assess the reliability and potential experimental errors of the single-disc assay for CDZM.

Summary:

The study compared cefodizime (CDZM) susceptibility results obtained from the 2-fold agar dilution method and the single-disc diffusion method across 34 bacterial species.

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A significant correlation was observed between MICs and inhibition zone diameters, confirming the applicability of the single-disc assay.

Regression equations were derived for different bacterial groups, enabling estimation of MICs from disc diffusion data.

Impact:

The findings validate the single-disc assay as a reliable and practical method for cefodizime (CDZM) susceptibility testing.
This can facilitate more widespread and efficient antimicrobial susceptibility testing in clinical and research settings.
The established regression equations provide a quantitative link between disc diffusion and MIC values for cefodizime (CDZM).