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.