How long was she infectious on the campaign plane and while on her campaign stops? How many people were infected? Andrea Mitchel was nearly swapping spit during that love fest on the plane.
When was her chest x-ray to confirm the diagnosis? Where did it take place?
This is why I doubt it is really pneumonia. Clintons lie as a matter of course, so the first assumption needs to be that she and her crew are lying again/still.
The type of pneumonia people with lung diseases or diseases that weaken the lungs get.
https://en.m.wikipedia.org/wiki/Aspiration_pneumonia
I bet that Huma feels uncomfortable.