Phenotypical and Genotypical Comparison of Clostridium difficile Isolated from Clinical Samples: Homebrew DNA Fingerprinting versus Antibiotic Susceptibility Testing (AST) and Clostridial Toxin Genes

Table 4

Susceptibility outcomes of isolated Clostridium difficile by the agar double-dilution method.

Antimicrobial agent	MIC method (n = 22)					Break points (mg/L)
	Antibiotics concentration range (mg/L)	S %	R %	MIC50%	MIC90%
Vancomycin	0.25–16	81.9	18.1	0.5	4	>2
Metronidazole	0.12–64	90.9	9.1	0.5	1	>2
Rifampicin	0.0019–32	100	0	0.0019	0.003	≥4