My father fell ill with pneumonia last year. He was really bad off for about a week before he basically collapsed and we took him to the hospital. He was in the ICU for two nights, and then moved to the general area for another four days. He was on a strict antibiotic regimen, and he also had then sterroid breathing treatments-- though I can't remember what they were called. It was about two weeks before he went back to feeling healthy again. He just had to take it really slow, and no over do anything.