A 68 year old patient
presents with a history of fever. Apart from a cystoscopy a few weeks prior to
presentation he had been previously fit and well. He was not on any
On examination he was
febrile, there were splinter haemorrhages in his finger nails and there was
clubbing. The pulse rate was 100 beats per minute and he had a bisferiens
pulse. JVP was not elevated, apex was not displaced, the second heart sound
was soft, there was an ejection systolic murmur radiating into his neck and he
had an early diastolic murmur at the left sternal edge. He had splenomegaly.
Multiple blood cultures are taken from this patient.
Which one of the following
organisms is likely to be isolated?