Endocarditis due to a stealthy bug

a Division of Clinical Microbiology, University Hospital Basel, Petersgraben 4, CH-4031 Basel, Switzerland b Division of Infectious Diseases and Hospital Epidemiology, University Hospital Basel, Petersgraben 4, CH-4031 Basel, Switzerland c Division of Cardiology, University Hospital Basel, Petersgraben 4, CH-4031 Basel, Switzerland d Institute for Infectious Diseases, Friedbuhlstrasse 51, CH-3010 Bern, Switzerland