A 75 year old man, living on his own, brought by the neighbour to the Emergency Department of the hospital with fever, fatigue, malaise and a productive cough since 15 days. He also gives history of chills and rigors. On examination, he has crepts and rhonchi in both the lungs
What is the probable diagnosis
Discuss the clinical correlation with pathogenesis of the features
How will you investigate and confirm the diagnosis
virtualPath 