A case report of Citrobacter koseri bacteraemia after transfusion of contaminated red cells

Background: Citrobacter koseri has not been associated to infection caused by blood component transfusions.

Case report: A 46-year-old female patient presented sudden chills, dyspnoea, and tachycardia during a transfusion from a unit of packed red blood cells. Citrobacter koseri was isolated in the two sample collected from the patient and from the content of the packed red blood cells.

Results: We report a case of bacteraemia due to a transfusion of contaminated red blood cells.

Conclusion: C. koseri should be taken into account in bacteraemias caused by transfusion of blood components.