In Vitro Activity of Levofloxacin Against United States S. pneumoniae Clinical Isolates

Levofloxacin MIC (mg/ml) Pen No. of

Suscep. Isolates Range MIC50 MIC90 % Sus Method Reference

S 154 0.25-1 0.5 1.0 100 Broth Brueggemann

I 150 0.5-16 0.5 1.0 N.R.* MicroDil 1997

R 100 0.5-1 0.5 1.0 100

S 53 0.25-2.0 1.0 2.0 100 Agar Spangler

I 84 0.25-2.0 1.0 2.0 100 1997

R 74 0.25-2.0 2.0 2.0 100

All 142 0.5-> 8.0 1.0 2.0 N.R. Broth Gerardo

S 123 0.5-2.0 1.0 2.0 100 MicroDil 1996

I/R 19 1.0-ɴ.0 1.0 2.0 N.R.

S 23 0.5-2.0 1.0 1.0 100 Agar Eliopoulos

R 15 0.5-1.0 1.0 1.0 100 1996

*Not Reported

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