2nd August 2023

A 74 year old man presents with an 8 day history of recurrent fevers and worsening palpitations, fatigue, muscle ache and joint pain.

A 74 year old man presents with an 8 day history of recurrent fevers and worsening palpitations, fatigue, muscle ache and joint pain. He takes metformin for diabetes and recently returned from a trip to Zimbabwe. A rapid diagnostic test for malaria comes back positive.

What is the most likely pathogen responsible?

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