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Antimicrobial Agents and Chemotherapy, February 2003, p. 816-819, Vol. 47, No. 2
0066-4804/03/$08.00+0     DOI: 10.1128/AAC.47.2.816-819.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

Levofloxacin and Ciprofloxacin In Vitro Activities against 4,003 Clinical Bacterial Isolates Collected in 24 Italian Laboratories

Medical Department,² Medicine Research Center GlaxoSmithKline, Verona,³ Laboratorio Analisi, Cardiologico Monzino Hospital IRCCS,¹ Clinical Microbiology Laboratory, S. Raffaele Hospital, Milan, Italy⁴

Received 10 December 2001/ Returned for modification 2 September 2002/ Accepted 1 November 2002

Levofloxacin showed comparable in vitro susceptibility to ciprofloxacin among Enterobacteriaceae, Pseudomonas aeruginosa, enterococci, and Staphylococcus aureus, while greater susceptibility was observed in Stenotrophomonas maltophilia and Staphylococcus epidermidis, mainly when oxacillin resistant. The susceptibility of Streptococcus pneumoniae to levofloxacin reached 99%.

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