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Table. 2.

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.

Ann Lab Med 2023;43:477~484 https://doi.org/10.3343/alm.2023.43.5.477

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