First report of Parabacteroides goldsteinii bacteraemia in a patient with complicated intra-abdominal infection.

Using 16S rRNA sequence analysis, we report the first isolation of Parabacteroides goldsteinii as a monobacterial isolate from blood culture in a patient with abdominal sepsis. P. goldsteinii phenotypically resembles Parabacteroides merdae and Parabacteroides distasonis and may be misidentified by commonly used enzymatic systems, suggesting that it may be more frequently present in clinical specimens than previously appreciated but either misidentified or ignored. 2010 Elsevier Ltd. All rights reserved.