I need assistance again, if one or some of you would be s...

I need assistance again, if one or some of you would be so kind?

Does anyone out there know about the course and severity of pneumonia, before the advent of penecillin? How long would it take to recuperate? How long would it take for the disease to run its course?

Many thanks for whatever information you can give! (And I will, of course, give credit in the book).