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Abstract
In a study involving 15 UK hospitals, sequential respiratory tract isolates of Streptococcus pneumoniae, Haemophilus influenzae and Moraxella catarrhalis were studied. The susceptibility of these strains to two fluoro-quinolones, ciprofloxacin and levofloxacin were compared to those of currently used macrolides and β-lactams.
The activity of ciprofloxacin and levofloxacin against S. pneumoniae was not statistically significantly different (geometric mean MIC 0.978 and 0.95 mg/L respectively). β-lactam resistance did not affect fluoroquinolone susceptibility. H. influenzae and M. catarrhalis were highly susceptible to both fluoro-quinolones.