Table 1. Frequency of species among 11,943 bacteria isolated from urine cultures collected between 2005-2006, and 2010-2011 at the University Hospital of the University of São Paulo (HU-USP).
| Order | Bacteria isolated in urine culture | Frequency (n) | Percentage (%) |
|---|---|---|---|
| 1° | Escherichia coli | 8,376 | 70.2% |
| 2° | Proteus mirabilis | 795 | 6.8% |
| 3° | Klebsiella pneumoniae | 692 | 5.9% |
| 4° | Enterococcus faecalis | 322 | 2.8% |
| 5° | Enterobacter aerogenes | 187 | 1.7% |
| 6° | Staphylococcus saprophyticus | 148 | 1.2% |
| 7° | Pseudomonas aeruginosa | 132 | 1.1% |
| 8° | Enterobacter cloacae | 126 | 1.1% |
| 9° | Citrobacter freundii | 122 | 1.0% |
| 10° | Morganella morganii | 104 | 0.9% |
| 11° | Staphylococcus aureus | 98 | 0.8% |
| 12° | Staphylococcus epidermidis | 85 | 0.7% |
| 13° | Citrobacter koseri | 82 | 0.7% |
| 14° | Staphylococcus sp. DNAse negative | 65 | 0.5% |
| 15° | Staphylococcus warneri | 62 | 0.5% |
| 16° | Serratia marcescens | 62 | 0.5% |
| 17° | Klebsiella oxytoca | 58 | 0.5% |
| 18° | Streptococcus agalactiae | 43 | 0.4% |
| 19° | Staphylococcus hominis | 38 | 0.3% |
| 20° | Acinetobacter baumannii | 36 | 0.3% |
| 21° | Others | 310 | 2.1% |
| Total | 11,943 | 100.0% |
Notes: 1: neg.: negative, or Staphylococcus spp., neither classified as S. aureus (DNAse positive) nor had a specie discrimination, due to lack of discriminatory power by automated method (Vitek 1 or 2).
Appendix: Another isolates, in order of frequency, from the twenty-first: Staphylococcus haemolyticus, Enterococcus faecium, Streptococcus viridans, Streptococcus mitis, Proteus vulgaris, Staphylococcus simulans, Providencia stuartii, Providencia rettgeri, Staphylococcus sciuri, Salmonella spp., Stenotrophomonas maltophilia, Staphylococcus auricularis, Staphylococcus capitis, Citrobacter amalonaticus, Proteus penneri, Raoultella ornithinolytica, Raoultella planticola, Staphylococcus xylosus, Enterobacter asburiae, Enterococcus spp., Serratia fonticola, Serratia liquefaciens, Streptococcus anginosus, Streptococcus sanguinis, Aeromonas spp., Gram-negative (not discriminated), Burkholderia cepacia, Citrobacter braakii, Citrobacter spp., Enterobacter gergoviae, Enterobacter spp., Pseudomonas spp., coagulase-negative Staphylococcus spp., Staphylococcus intermedius, Staphylococcus lentus, Staphylococcus lugdunensis, Streptococcus bovis, Streptococcus spp. gallolyticus var. gallolyticus, Acinetobacter haemolyticus, Acinetobacter lwoffii, Acinetobacter spp., nonfermenting Gram-negative bacteria, Enterobacter sakazaki, Enterococcus hirae, Klebsiella ornithinolytica, Pantoea spp., Proteus spp., Providencia spp., Pseudomonas fluorescens, Pseudomonas putida, Staphylococcus cohnii spp. cohnii, Streptococcus gordonii, Streptococcus parasanguinis, Streptococcus pyogenes, beta-hemolytic group G Streptococcus spp.