24th June 2026

A patient who underwent a mitral valve repair for a congenital mitral valve defect presents generally unwell 4 months following surgery, and is diagnosed with infective endocarditis.

A patient who underwent a mitral valve repair for a congenital mitral valve defect presents generally unwell 4 months following surgery, and is diagnosed with infective endocarditis. They have no other past medical history. What is the most likely causative organism? 

Select the SINGLE most appropriate option from the list below. Select ONE option only.