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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

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Table 3

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

Site Antibiogram ABCs Difference in
% nonsusceptible
(antibiogram vs. ABCs)
No. laboratories a Non -susceptible isolates Total. isolates tested % non-susceptible No. laboratories Non-susceptible isolates Total isolates tested % non-susceptible
Georgia 10 178 805 22.1 39 207 850 24.4 -2.3
Tennessee 8 133 460 28.9 31 113 440 25.7 3.2
Oregon 6 57 405 14.1 15 18 178 10.1 4.0
Maryland 7 64 596 10.7 27 35 557 6.3 4.4
New York 4 23 128 11.7 20 4 69 5.8 5.9
California 9 92 577 15.9 10 15 184 8.2 7.7
Minnesota 10 140 684 20.5 25 55 435 12.6 7.9
Connecticut 7 58 287 20.2 32 65 624 10.4 9.8
Total 61 737 3,942 18.7 199 512 3,337 15.3 Median: 5.15

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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