Antimicrobial surveillance of Haemophilus influenzae in the United States during 2000-2001 leads to detection of clonal dissemination of a β-lactamase-negative and ampicillin-resistant strain

被引:41
作者
Karlowsky, JA [1 ]
Critchley, IA [1 ]
Blosser-Middleton, RS [1 ]
Karginova, EA [1 ]
Jones, ME [1 ]
Thornsberry, C [1 ]
Sahm, DF [1 ]
机构
[1] Focus Technol Inc, Herndon, VA 20171 USA
关键词
D O I
10.1128/JCM.40.3.1063-1066.2002
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
A 2000-2001 U.S. Haemophilus influenzae surveillance study (n = 1,434) detected nine (0.6%) beta-lactamase-negative and ampicillin-resistant (BLNAR) isolates collected from two different hospitals. The MICs of ampicillin for all nine isolates were 4 mug/ml, with results being reproducible; and all nine isolates were susceptible to amoxicillin-clavulanate, cefuroxime, cefprozil, macrolides, and fluoroquinolones. Pulsed-field gel electrophoresis of genomic DNA following Small digestion demonstrated identical patterns for each of the nine isolates, suggesting intra- and interhospital dissemination of a BLNAR clone.
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页码:1063 / 1066
页数:4
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