MRCP2-2830

A 36-year-old farmer presents to the acute medical unit with a 2-week history of fever and dry cough. He reports feeling increasingly lethargic with body aches and headaches. There is mild tenderness in the right upper quadrant, but his abdomen remains soft with no palpable organomegaly. On auscultation, scattered crackles are heard. Laboratory tests reveal elevated WBC count and CRP levels. Based on this presentation, what is the most probable causative organism?