Uncommon Strain for an Intracranial Infection: Bacillus Simplex as Suspected Cause of Brain Abscess

Brain abscess is a serious life threatening condition. Leading causes include open head injury, history of neurosurgical procedure, dissemination from distant abscessual foci, sepsis, continuity spreading. Most common pathogens involved in genesis of brain abscesses are Streptococcus and Staphylococcus spp. depending on the pathogenetic mechanism. The aim of this study is to report a brain abscess sustained by Bacillus Simplex, a microorganism thought to be responsible of food-borne diseases, whose marginal role is recognized in human pathology, but in this case, for the first time in literature, described as suspected as cause of brain abscess.