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Case Reports in Medicine
Volume 2015 (2015), Article ID 704785, 3 pages
Case Report

First Case of Tricuspid Valve Endocarditis Caused by Gemella bergeri

1Division of Cardiovascular Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
2International Emerging Infection Program (IEIP), Thailand MOPH-US CDC Collaboration, Nonthaburi 10110, Thailand

Received 12 June 2015; Accepted 16 July 2015

Academic Editor: Florian Thalhammer

Copyright © 2015 Orathai Pachirat et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Gemella bergeri is a Gram-positive cocci species arranged in pairs and composes the normal flora of oral cavity, digestive and urinary tract. Several species of Gemella are known to cause endocarditis. Here, we report the first case in Thailand of G. bergeri endocarditis whose blood culture was negative using routine methods but was positive by PCR identification of bacteria in the affected valve. A 37-year-old male presented with prolonged fever, weight loss, and dyspnea on exertion. By transthoracic echocardiography, he was suspected of having infective endocarditis of the tricuspid valve. The patient underwent tricuspid valve repair and vegetectomy. Routine hospital blood cultures were negative but G. bergeri was identified by PCR/sequencing of the heart valve tissue.