Transfusion-transmitted bacterial infection (TTBI) list of commonly isolated organisms

Organism

Gram-positive

Staphylococcus aureus

Streptococcus spp (S. viridans, S. bovis, beta-hemolytic streptococci)

Coagulase-negative staphylococci

Enterococcus faecalis

Listeria monocytogenes

Bacillus cereus and other Bacillus spp

Clostridium perfringens

Cutibacterium (formerly Propionibacterium) acnes

Gram-negative

Escherichia coli

Klebsiella spp

Serratia spp

Bacillus spp (most are Gram-positive)

Enterobacter spp

Acinetobacter spp

Proteus mirabilis

Providencia rettgeri

Pseudomonas spp

Yersinia enterocolitica

Pasteurella multocida

Gram-positive organisms are more commonly isolated from platelet products. Gram-negative organisms may be more common than gram-positive organisms from RBC products. Refer to UpToDate for details.

RBC: red blood cell; spp: species.

Graphic 79680 Version 8.0

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Transfusion-transmitted bacterial infection (TTBI) list of commonly isolated organisms