An Unusual Presentation of Endocarditis Caused by Staphylococcus warneri

Ganesh D Kini1, *, Ketan Patel1, Addison R Parris2, Jane S Tang3
1 Department of Medicine, Rockingham Memorial Hospital, Harrisonburg, Virginia
2 Department of Infectious Diseases, Rockingham Memorial Hospital, Harrisonburg, Virginia
3 Noblis Falls Church, Virginia

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© Kini et al.; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the Department of Medicine, Rockingham Memorial Hospital, 2010 Health Campus Drive, Harrisonburg, VA 22801, USA; Tel: 540-689-1100; Fax: 540-689-1119; E-mail:


Staphylococcus warneri does not generally cause serious infections in humans. We report a case of endocarditis in a healthy individual with no known past medical history. S. warneri was identified in her blood cultures and echocardiographic evidence confirmed the diagnosis of bacterial endocarditis. There was no apparent cause for her infection, and risk factors such as invasive treatment or medical implant were not present. This rare clinical presentation illustrates the importance of not overlooking low virulence species of Staphylococcus, as they can potentially serve as opportunistic etiological agents for endocarditis, especially among the elderly population.

Keywords: Staphylococcus warneri, coagulase negative staphylococci, endocarditis, immunocompetent.