TABLE 2.
Comparative times to positivity of clinically important bacteria and fungi when both PSN and GSN culture bottles were positive within 5 days
| Microorganism | No. of isolates | Mean time to positivity (hours)
|
|
|---|---|---|---|
| PSN | GSN | ||
| Staphylococcus aureus | 33 | 17.5 | 24.1 |
| Coagulase-negative staphylococci | 7 | 13.4 | 14.8 |
| Streptococcus spp.a | 10 | 11.1 | 12.8 |
| Enterococcus spp.b | 31 | 20.9 | 18.5 |
| Enterobacteriaceaec | 51 | 12.1 | 12.2 |
| Anaerobic bacteriad | 4 | 44.1 | 54.9 |
| All microorganisms | 136 | 16.4 | 17.9 |
Includes Streptococcus agalactiae (n = 4), viridans group streptococci (n = 3), Streptococcus pneumoniae (n = 2), and Streptococcus bovis (n = 1).
Includes Enterococcus faecium (n = 16), Enterococcus faecalis (n = 9), Enterococcus avium (n = 4), and Enterococcus gallinarum (n = 2).
Includes Klebsiella pneumoniae (n = 22), Escherichia coli (n = 10), Klebsiella oxytoca (n = 7), Enterobacter cloacae (n = 4), Serratia marcescens (n = 4), Citrobacter freundii (n = 2), and Enterobacter aerogenes (n = 2).
Includes Bacteroides fragilis (n = 2), Bacteroides thetaiotaomicron/ovatus group (n = 1), and Clostridium perfringens (n = 1).