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Consumption of fluoroquinolones (♦), ceftriaxone (•), and co-trimoxazole (×), expressed as the DDDs for 1,000 hospitalization days in the geriatric hospital and the ratio of urinary E. coli isolates resistant to these antibiotics in 2000, 2001, and 2002. The bars represent data for E. coli isolates not susceptible to fluoroquinolones (solid bars), ceftriaxone (stippled bars), and co-trimoxazole (gray bars).
