Emerging Infectious Disease ISSN: 1080-6059

Increasing Resistance to Vancomycin and Other Glycopeptides in Staphylococcus aureus

Fred C. Tenover*, James W. Biddle*, and Michael V. Lancaster†

Author affiliations: *Centers for Disease Control and Prevention, Atlanta, Georgia, USA; †Bright Ideas, Monterey, California, USA

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Figure 2

A blood agar plate incubated for 24h at 35°C in which the multiple colonial morphologies of the Michigan VISA strain can be observed. The large cream colored colonies and smaller gray colonies demonstrated the same antibiogram (vancomycin MIC= 8 ug/ml) and pulsed field gel electrophoresis profiles.

Figure 2. . A blood agar plate incubated for 24h at 35°C in which the multiple colonial morphologies of the Michigan VISA strain can be observed. The large cream colored colonies and smaller gray colonies demonstrated the same antibiogram (vancomycin MIC= 8 ug/ml) and pulsed field gel electrophoresis profiles.

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