Case report Yeo-Jin Song1*, Bongyoung Kim1*, Young-eun Kim2, Yangsoon Lee2, Hyunjoo Pai1 1Department of Internal Medicine, 2Department of Laboratory Medicine, Hanyang University College of Medicine, Seoul, Korea *These authors contributed equally to this work. Corresponding to Hyunjoo Pai, E-mail: paihj@hanyang.ac.kr Ann Clin Microbiol 2020;23(4):211-216. https://doi.org/10.5145/ACM.2020.23.4.6Received on 19 February 2020, Revised on 10 April 2020, Accepted on 10 April 2020, Published on 20 December 2020.Copyright © Korean Society of Clinical Microbiology. Abstract Rothia spp. are aerobic, gram-positive cocci belonging to the family Micrococcaceae, and are a part of the normal microbial flora of the human oropharynx and upper respiratory tract. We present the first case of the prosthetic valve endocarditis with cerebral hemorrhage caused by Rothia mucilaginosa in South Korea. A 65-year-old man with a prosthetic aortic valve visited the outpatient clinic with a complaint of fever. R. mucilaginosa was identified in one among four sets of blood culture bottles obtained

PDF Original article Annals of Clinical Microbiology (Ann Clin Microbiol) 2020 December, Volume 23, Issue 4, pages 211-216. https://doi.org/10.5145/ACM.2020.23.4.6 Yeo-Jin Song1*, Bongyoung Kim1*, Young-eun Kim2, Yangsoon Lee2, Hyunjoo Pai11Department of Internal Medicine, 2Department of Laboratory Medicine, Hanyang University College of Medicine, Seoul, Korea Abstract Rothia spp. are aerobic, gram-positive cocci belonging to the family Micrococcaceae, and are a part of the normal microbial flora of the human oropharynx and upper respiratory tract. We present the first case of the prosthetic valve endocarditis with cerebral hemorrhage caused by Rothia mucilaginosa in South Korea. A 65-year-old man with a prosthetic aortic valve visited the outpatient clinic with a complaint of fever. R. mucilaginosa was identified in one among four sets of blood culture bottles obtained on the on day 30 of fever onset. Brain magnetic resonance imaging (MRI) showed multiple micro-hemorrhages suggesting septic emboli in both the hemispheres, corticomedullary junctions, and cerebellum.