Brevibacterium sp. was isolated from the blood of an acutely iii Is-year-ol
d female with AIDS. The isolate was identified as Brevibacteriun casei by u
se of carbohydrate assimilation tests. Treatment was successful with intrav
enonsly administered ciprofloxacin. To our knowledge, this is the first rep
ort of sepsis caused by B. casei in a human immunodeficiency virus-infected
patient.