Table 2.
Microbial culture results for HSC products and other samples and potential sources/steps of contamination
| Bacteria identified in peripheral blood collection | Additional culture site | Aliquot culture | Source/step of contamination | ||
|---|---|---|---|---|---|
|
| |||||
| Catheter | Peripheral blood | Other | |||
| Period 1 (1996-2007) | |||||
| Acinetobacter calcoaceticus–baumannii complex | - | - | - | - | Undefined |
| Aspergillus niger | - | - | - | - | Undefined |
| Cladosporium spp. | - | - | - | - | Undefined |
| CoNS | No growth | - | - | - | Collection/processing |
| Escherichia coli | - | - | - | - | Undefined |
| Enterococcus faecium (Group D) | - | No growth | - | - | Collection/processing |
| Fonsecaea spp. | No growth | - | - | - | Collection/processing |
| Lactobacillus jensenii/Peptostreptococcus anaerobius | No growth | - | - | - | Collection/processing |
| Leuconostoc pseudomesenteroides | - | - | - | - | Undefined |
| Micrococcus spp. | CoNS | No growth | - | - | Collection/processing |
| Penicillium spp. | No growth | No growth | Sputum - Penicillium spp. | - | Collection/processing |
| Penicillium spp. | Bacillus subtilis | - | - | - | Collection/processing |
| Penicillium spp. | No growth | No growth | Sputum - Aspergillus fumigatus | - | Collection/processing |
| Peptostreptococcus spp. | - | - | - | - | Undefined |
| Propionibacterium acnes | No growth | No growth | - | - | Collection/processing |
| Pseudomonas aeruginosa | - | No growth | - | - | Collection/processing |
| Staphylococcus aureus | - | - | - | - | Undefined |
| Sphingomonas paucimobilis | - | - | - | - | Undefined |
| Unidentified mold-type fungi | S. aureus | - | - | - | Collection/processing |
| Period 2 (2008-2021) | |||||
| Bacillus cereus group | B. cereus group | B. cereus group | - | - | Bacteremia |
| CoNS | - | - | - | N/A | Undefined |
| CoNS | CoNS | - | - | No growth | Culture preparation |
| CoNS | CoNS | - | - | - | Catheter |
| CoNS | CoNS | - | - | - | Catheter |
| Corynebacterium jeikeium | - | - | - | No growth | Culture preparation |
| E. coli | No growth | No growth | Urine: E. coli > 100,000 CFU/mL | E. coli | Suspicious of Bacteremia |
| Enterobacter cloacae | E. cloacae | E. cloacae | - | - | Bacteremia |
| E. cloacae | E. cloacae | E. cloacae | - | - | Bacteremia |
| Leuconostoc pseudomesenteroides | - | - | - | No growth | Culture preparation |
| Leuconostoc mesenteroides subsp. dextranicum | No growth | No growth | - | - | Collection/processing |
| Rothia dentocariosa | - | - | - | No growth | Culture preparation |
| S. aureus | S. aureus | S. aureus | - | - | Bacteremia |
| S. aureus | S. aureus | S. aureus | - | S. aureus | Bacteremia |
| Staphylococcus warneri (CoNS) | - | - | - | No growth | Culture preparation |
| Streptococcus salivarius | - | - | - | No growth | Culture preparation |
N/A, not applicable; -, not determined.
Abbreviations: HSC, hematopoietic stem cell; CoNS, coagulase-negative Staphylococcus; spp., species; subsp., subspecies.