20th June 2024

A 54-year-old lady presents to the Emergency department with a fever for 5 days

A 54-year-old lady presents to the Emergency department with a fever for 5 days. This is associated with anorexia, rigors, and malaise. She has no significant past medical history of note except dermatitis. She looks unwell and there is a systolic murmur and bilateral crepitations at the lung bases. Initial bloods are taken, including blood cultures, and she is started on empirical antibiotic therapy for possible infective endocarditis.

What is the most likely causative organism?

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