Actinotignum schaalii bloodstream infection and identification of pathogen: one case report

Abstract:

Actinotignum schaalii (A. shaalii) is an emerging pathogen that may cause urinary tract infection and invasive infection. In 2022, pathogen in a blood culture specimen from a patient with acute urinary retention admitted to Guiqian International General Hospital was identified as A. schaalii by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS), which is a facultative anaerobic Gram-positive coccobacillus. This case reported the first time that A. schaalii was detected in blood culture in China. After using ceftazidime for 5 days, infection symptoms of patient were significantly reduced, infection indicators returned to normal. Patient did not complain of fever and other discomfort and was discharged. This article discusses the clinical characteristics, identification and treatment of A. schaalii in combination with relevant literatures at home and abroad.