Presumed Septic Shock Caused by Actinotignum schaalii Bacteremia.

We herein report a case of presumed septic shock due to Actinotignum schaalii bacteremia with urinary tract infection. A 65-year-old Japanese man suffering from a fever was diagnosed with septic shock due to urinary tract infection. A urine sample was additionally incubated under 5% CO and anaerobic conditions after A. schaalii was identified in a blood culture, but A. schaalii was not detected in the urine culture. If Gram-positive rods are observed on Gram staining of a urine sample in symptomatic patients with a predisposing urogenital condition, 5% CO and an anaerobic culture of a urine sample should be performed immediately.