An unusual case of a large, sporadic intra-abdominal abscess due to group B Streptococcus and a review of the literature.

Group B streptococcal infections among non-pregnant adults have dramatically increased over the past two decades. Most infections involve skin/soft tissue infections and bacteremia, but whether more unusual clinical manifestations due to this organism will arise in clinical practice remains unclear. This report is the first case in the literature of a sporadic, large intra-abdominal abscess due to group B Streptococcus in an immunocompetent adult. Given the rising number of invasive group B streptococcal infections among adults, unusual presentations of this organism may increasingly be seen in clinical practice. This report reviews the literature regarding invasive group B Streptococcus infections, including intra-abdominal/pelvic abscesses, and discusses the clinical presentation and management of this emerging pathogen.