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Volume 9, Number 9—September 2003

Research

Aggregated Antibiograms and Monitoring of Drug-Resistant Streptococcus pneumoniae

Chris A. Van Beneden*Comments to Author , Catherine Lexau†, Wendy Baughman‡, Brenda Barnes§, Nancy Bennett¶, P. Maureen Cassidy#, Margaret Pass**, Lisa Gelling††, Nancy L. Barrett‡‡, Elizabeth R. Zell*, and Cynthia G. Whitney*
Author affiliations: *Centers for Disease Control and Prevention, Atlanta, Georgia, USA; †Minnesota Department of Health, Minneapolis, Minnesota, USA; ‡Veterans Affairs Medical Center, Atlanta, Georgia, USA; §Vanderbilt Medical Center, Nashville, Tennessee, USA; ¶Monroe County Health Department, Rochester, New York, USA; #Oregon Department of Human Services, Portland, Oregon, USA; **Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA; ††California Emerging Infections Program, Oakland, California, USA; ‡‡Connecticut Emerging Infections Program, Department of Public Health, Hartford, Connecticut, USA

Main Article

Table 1

Comparison of percent of Streptococcus pneumoniae isolates nonsusceptible to penicillin by site: active surveillance (ABCs) versus antibiogram

Site Antibiogram ABCs
No. laboratoriesa Nonsusceptible isolates Total no. isolates tested % nonsusceptible No. laboratories Nonsusceptible isolates Total no. isolates tested % nonsusceptible Difference in % nonsusceptible (antibiograms vs. ABCs)
Connecticut 16 168 845 19.9 32 113 624 18.1 1.8
California 9 107 577 18.5 10 30 184 16.3 2.2
Oregon 9 115 550 20.9 15 32 178 18.0 2.9
Tennessee 10 432 1,037 41.7 31 169 440 38.4 3.3
Maryland 10 171 886 19.3 27 85 557 15.3 4.0
Georgia 14 505 1,291 39.1 39 292 850 34.4 4.7
New York 9 85 383 22.2 20 10 69 14.5 7.7
Minnesota 19 315 1,037 30.4 25 95 435 21.8 8.6
Total 96 1,898 6,606 28.7 199 826 3,337 24.8 Median: 3.65

aOnly laboratories whose antibiograms covered the calendar year in question (1997 for all sites except NY [1998]) were compared to ABCs.

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