We report Mycetohabitans rhizoxinica bacteremia in a 65-year-old woman in California, USA, who was undergoing chimeric antigen receptor T-cell therapy for multiple myeloma. Acute brain infarction and pneumonia developed; Rhizopus microsporus mold was isolated from tracheal suction. Whole-genome sequencing confirmed bacteria in blood as genetically identical to endofungal bacteria inside the mold.
Keywords: Burkholderia rhizoxinica; Mycetohabitans rhizoxinica; Rhizopus microspores; United States; bacteremia; bacteria; endofungal bacteria; fungi; mucormycosis; respiratory infection.