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.