Emergence of high rates of antimicrobial resistance among viridans group streptococci in the United States.

Journal article

Three hundred fifty-two blood culture isolates of viridans group streptococci obtained from 43 U.S. medical centers during 1993 and 1994 were characterized. Included were 48 isolates of "Streptococcus milleri," 219 S. mitis isolates, 29 S. salivarius isolates, and 56 S. sanguis isolates. High-level penicillin resistance (MIC, > or = 4.0 micrograms/ml) was noted among 13.4% of the strains; for 42.9% of the strains, penicillin MICs were 0.25 to 2.0 micrograms/ml (i.e., intermediate resistanc...

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Authors: Doern, G; Ferraro, M; Brueggemann, A; Ruoff, K

• Journal: Antimicrobial agents and chemotherapy
• Volume: 40
• Issue: 4
• Pages: 891-894
• Publication date: 1996-04-01
• EISSN: 1098-6596
• ISSN: 0066-4804
• Language: English
• Keywords: Erythromycin; Tetracyclines; Anti-Bacterial Agents; Streptococcus; United States; Penicillins; Microbial Sensitivity Tests; Chloramphenicol; Drug Resistance, Microbial; Humans