Bloodstream infection with Anaerobiospirillum succiniciproducens: a potentially lethal infection.

Anaerobiospirillum succiniciproducens (A succiniciproducens), a spiral, Gram-negative anaerobic rod which is part of the normal intestinal flora of cats and dogs, has rarely been reported as a cause of bacteremia and diarrhea in humans, particularly in immunocompromised hosts. Although it can be associated with significant mortality, the full extent of its pathogenicity, clinical spectrum, and optimal therapy remain to be determined. We review the available literature on microbiology, clinical manifestations, and treatment options for Anaerobiospirillum infection.