RT Journal Article SR Electronic T1 Gemella morbillorum mitral valve endocarditis in a patient with a history of mitral valve annuloplasty JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e247033 DO 10.1136/bcr-2021-247033 VO 15 IS 4 A1 Liu, Charles Ruohua A1 Heid, Christopher A A1 Chandra, Raghav A1 Hauptmann, Edward A1 Brickner, Mary Elizabeth A1 Hwang, Michael A1 Wait, Michael A YR 2022 UL http://casereports.bmj.com/content/15/4/e247033.abstract AB A woman with a history of congenital heart disease status post multiple valve operations including mitral valve repair presented with 2 months of low back pain and general malaise. Blood cultures returned positive for Gram-positive cocci. While transthoracic echocardiography did not identify vegetations, transoesophageal echocardiography visualised vegetations on the patient’s mitral valve, which had previously undergone repair with annuloplasty. The patient was found to have infectious endocarditis (IE), caused by Gemella morbillorum. The patient was treated with over 6 weeks of intravenous antibiotics. Cases of Gemella-associated IE are rare and largely relegated to case reports. This report aims to contribute to the literature regarding this subject, and to further characterise the presentation and treatment of Gemella-associated IE. Additionally, this report emphasises the importance of maintaining a high suspicion of IE in a patient with non-specific malaise in the setting of prior cardiac valve operation.