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Patterns and mechanisms of beta-lactam resistance among isolates of Escherichia coli from hospitals in the United States

1 May 1990

Abstract excerpt

To study the national distribution of beta-lactam resistance patterns and mechanisms among Escherichia coli organisms isolated in U.S. hospitals, 652 ampicillin-resistant (Am(r)) or ampicillin-intermediate (Ami) isolates were submitted to the Centers for Disease Control from March 1983 through July 1984 by nine hospitals participating in the National Nosocomial Infections Study. Among the isolates (most of which...

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PMID: 2193616
DOI: 10.1128/aac.34.5.739

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