TABLE 6.
Comparative time to positivity in FN versus SN blood culture bottles detected within 72 h
| Microorganism | No. | Mean time (h)
|
|
|---|---|---|---|
| FN | SN | ||
| Gram-positive bacteria | |||
| Staphylococcus aureus | 105 | 16.5 | 19.9 |
| Coagulase-negative staphylococci | 64 | 22.0 | 23.6 |
| Streptococcus and Enterococcus spp. | 65 | 14.2 | 13.8 |
| Gram-negative bacilli | |||
| Enterobacteriaceae | 63 | 14.3 | 13.2 |
| All microorganismsa | 305 | 16.8 | 18.2 |
a
Includes four isolates of P. aeruginosa; two of Bacteroides fragilis, one of Haemophilus influenzae, and one of Bacillus sp.