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Clin Infect Dis. 1998 Aug;27 Suppl 1:S84-6.

Resistance of enterococci to ampicillin and glycopeptide antibiotics in Italy. The Italian Surveillance Group for Antimicrobial Resistance.

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Istituto di Microbiologia, Università degli Studi di Verona, Italy.


We report the results of the monitoring of resistance to ampicillin, vancomycin, and teicoplanin in enterococci by an Italian network of clinical microbiology laboratories. A total of 16,226 strains were analyzed; 9,169 of these strains were Enterococcus faecalis, 913 were Enterococcus faecium, and 6,144 were Enterococcus species. The average rate of resistance to ampicillin was 1.9% (range, 0-6.5%) for E. faecalis and 70% (range, 33.3%-98.7%) for E. faecium; the average rate of resistance to vancomycin was 1.1% (range, 0.1%-2%) for E. faecalis and 8.5% (range, 0-36.1%) for E. faecium; and the average rate of resistance to teicoplanin was 0.8% (range, 0-2.4%) for E. faecalis and 8.7% (range, 0-36.1%) for E. faecium.

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