Pneumococcal Susceptibilities: US 1996-97

% Susceptible (NCCLS breakpoints)

Pen S Pen I Pen R

(n=820) (n=218) (n=238)

Grepafloxacin 99.9 99.5 99.5

Sparfloxacin 99.8 99.5 99.2

Levofloxacin 100.0 99.5 99.2

Ofloxacin 99.8 99.5 99.2

Clindamycin 98.8 86.7 81.9

Rifampin 99.8 100.0 99.6

Tetracycline 96.0 72.0 48.7

TMP-SMX 96.7 86.6 59.6

Vancomycin 100.0 100.0 100.0

Thornsberry et al. AAC 1999;43:2612

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