TABLE 1.

Microbiological characteristics of VVE isolates (n = 30) from the outbreak^a

Antibiotic	MIC (mg/liter)
Penicillin	≥128
Ampicillin	≥16
Erythromycin	≥8
Clindamycin	≥4
Tetracycline	≥16
Ciprofloxacin	≥4
Linezolid	≤2
Vancomycin	1

^aAll isolates belonged to sequence type 18.