Sepsis Caused by Ewingella americana in an Immunocompromised Patient: A Case Report

Human infections caused by <i>Ewingella americana</i> have been rarely described. We report a case of <i>E. americana</i> in a cancer patient undergoing chemotherapy, who developed sepsis during a red blood cell transfusion. This causative pathogen was identified through the patient's blood culture. The patient was treated with ceftriaxone and showed complete clinical improvement, with no further growth of <i>E. americana</i> or other pathogenic isolates in subsequent blood cultures. To the best of our knowledge, this is the first reported case of <i>E. americana</i> infection in a cancer patient undergoing chemotherapy in Türkiye.