TABLE 1.
Time to recovery of microorganisms from blood cultures with BacT/ALERT FA and FN bottles
| Organisma | No. (%) of organisms recovered on day:
|
Total no. of organisms recovered | ||||
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | ||
| Significant isolates | ||||||
| Gram-positive cocci | ||||||
| Staphylococcus aureus | 587 | 161 | 23 | 7 | 8 | 786 |
| Staphylococcus lugdunensis | 4 | 3 | 0 | 0 | 0 | 7 |
| Staphylococcus sp. not S. aureus | 256 | 165 | 10 | 3 | 0 | 434 |
| Streptococcus pneumoniae | 74 | 1 | 0 | 0 | 0 | 75 |
| Beta-hemolytic streptococci | 72 | 8 | 1 | 0 | 0 | 81 |
| Enterococci | 132 | 18 | 1 | 0 | 1 | 152 |
| Other streptococci | 79 | 11 | 2 | 1 | 0 | 93 |
| Aerobic gram-positive bacilli | 22 | 4 | 2 | 0 | 0 | 28 |
| Enterobacteriaceae | ||||||
| Citrobacter sp. | 16 | 0 | 1 | 0 | 0 | 17 |
| Enterobacter sp. | 33 | 5 | 0 | 0 | 1 | 39 |
| Escherichia coli | 297 | 22 | 4 | 4 | 0 | 327 |
| Escherichia hermannii | 1 | 0 | 0 | 0 | 0 | 1 |
| Klebsiella oxytoca | 22 | 1 | 0 | 0 | 0 | 23 |
| Klebsiella pneumoniae | 120 | 4 | 1 | 1 | 0 | 126 |
| Kluyvera sp. | 1 | 0 | 0 | 0 | 0 | 1 |
| Hafnia alvei | 2 | 0 | 0 | 0 | 0 | 2 |
| Morganella morganii | 7 | 2 | 0 | 0 | 0 | 9 |
| Proteus mirabilis | 37 | 3 | 0 | 1 | 0 | 41 |
| Proteus vulgaris | 4 | 0 | 0 | 0 | 0 | 4 |
| Providencia sp. | 6 | 0 | 0 | 0 | 0 | 6 |
| Salmonella sp. | 7 | 0 | 0 | 0 | 0 | 7 |
| Serratia marcescens | 19 | 7 | 1 | 1 | 0 | 28 |
| Other GNB | ||||||
| Acinetobacter anitratus | 10 | 3 | 0 | 0 | 0 | 13 |
| Aeromonas sp. | 1 | 0 | 0 | 0 | 0 | 1 |
| Alcaligenes xylosoxidans | 2 | 3 | 1 | 1 | 0 | 7 |
| Burkholderia cepacia | 1 | 0 | 0 | 0 | 0 | 1 |
| Comamonas acidovorans | 1 | 0 | 0 | 0 | 0 | 1 |
| Eikenella corrodens | 0 | 1 | 1 | 0 | 0 | 2 |
| Flavimonas oryzihabitans | 1 | 0 | 0 | 0 | 0 | 1 |
| Haemophilus influenzae | 3 | 1 | 1 | 0 | 0 | 5 |
| Moraxella osloensis | 2 | 0 | 0 | 0 | 0 | 2 |
| Neisseria meningitidis | 2 | 0 | 0 | 0 | 0 | 2 |
| Pasteurella multocida | 4 | 0 | 0 | 0 | 0 | 4 |
| Pseudomonas aeruginosa | 53 | 9 | 2 | 0 | 0 | 64 |
| Pseudomonas stutzeri | 0 | 3 | 0 | 0 | 0 | 3 |
| Pseudomonas sp. | 2 | 0 | 0 | 0 | 0 | 2 |
| Shewanella putrefaciens | 0 | 0 | 0 | 1 | 0 | 1 |
| Stenotrophomonas maltophilia | 5 | 6 | 1 | 0 | 0 | 12 |
| Other gram-negative bacilli | 6 | 4 | 1 | 1 | 0 | 12 |
| Yeast | ||||||
| Candida albicans | 3 | 19 | 11 | 3 | 1 | 37 |
| Candida glabrata | 0 | 2 | 13 | 7 | 2 | 24 |
| Candida lusitaniae | 3 | 1 | 0 | 0 | 0 | 4 |
| Candida parapsilosis | 3 | 12 | 5 | 0 | 1 | 21 |
| Candida tropicalis | 11 | 2 | 0 | 0 | 0 | 13 |
| Cryptococcus neoformans | 0 | 0 | 0 | 3 | 0 | 3 |
| Malassezia pachydermatis | 0 | 1 | 1 | 4 | 5 | 11 |
| Yeast, no I.D. | 0 | 2 | 3 | 0 | 0 | 5 |
| Anaerobes | ||||||
| Bacteroides fragilis group | 8 | 15 | 1 | 1 | 1 | 26 |
| Bacteroides uniformis | 0 | 0 | 0 | 2 | 0 | 2 |
| Bacteroides urealyticus | 0 | 0 | 0 | 2 | 0 | 2 |
| Bifidobacterium sp. | 0 | 0 | 0 | 1 | 0 | 1 |
| Clostridium perfringens | 6 | 0 | 0 | 0 | 0 | 6 |
| Clostridium septicum | 1 | 1 | 0 | 0 | 0 | 2 |
| Clostridium sp. | 4 | 2 | 0 | 0 | 0 | 6 |
| Eubacterium lentum | 0 | 0 | 2 | 0 | 1 | 3 |
| Fusobacterium sp. | 0 | 3 | 3 | 0 | 0 | 6 |
| Anaerobic gram-positive bacilli | 2 | 3 | 0 | 0 | 0 | 5 |
| Anaerobic gram-positive cocci | 1 | 2 | 2 | 1 | 2 | 8 |
| Anaerobic gram-negative bacilli | 2 | 1 | 0 | 1 | 0 | 4 |
| Total | 1,935 (74) | 513 (20) | 94 (4) | 44 (2) | 23 (1) | 2,609 |
| Probable contaminants | ||||||
| Staphylococcus sp. not S. aureus | 352 | 460 | 56 | 8 | 4 | 880 |
| Viridans streptococci | 68 | 22 | 2 | 1 | 1 | 94 |
| Propionibacterium sp. | 0 | 2 | 0 | 1 | 3 | 6 |
| Neisseria sp. | 2 | 2 | 1 | 0 | 0 | 5 |
| Aerococcus sp. | 0 | 1 | 0 | 0 | 0 | 1 |
| Lactobacillus sp. | 0 | 1 | 1 | 0 | 1 | 3 |
| Bacillus sp. | 12 | 10 | 3 | 2 | 2 | 29 |
| Aerobic non-spore-forming GPR | 13 | 38 | 12 | 10 | 5 | 78 |
| Unidentified gram-positive cocci | 1 | 1 | 1 | 0 | 0 | 3 |
| Total | 448 | 537 | 76 | 22 | 16 | 1,099 |
a
GNB, gram-negative bacilli; I.D., identification; GPR, gram-positive rods.