Brain abscess due to Streptococcus acidominimus: first case report.

Background: Streptococcus acidominimus resembles Streptococcus viridans, but they can now be differentiated by phenotypic studies. Only a single previous case of pneumonia, pericarditis, and meningitis has been reported.

Case Description: We recently encountered a patient with brain abscess from which S acidominimus was isolated after initially being recorded as S viridans.

Purpura fulminans due to Streptococcus pneumoniae sepsis following gastric bypass.

An older female underwent bariatric surgery which was followed by a significant weight loss and diarrhea, from which C. difficile was isolated just before her hospitalization. Less than 48 hours after admission, she became febrile, developed deep venous thrombosis of the leg and a pulmonary embolus.