Re: **Ventilation**
Fresh air is always nice! And it would be nice if we could open windows in the hospital, however just as TazziRN mentioned, the ventilation and climate control systems that are used in the present day are much more elaborate and advanced than what they had 150+ years ago in Florence's time. Not only is there potential problem for patients exiting out windows, but also the possibility of pollen, mold spores, air pollutants, insects, and other potentially irritating substances that would then easily gain access to the hospital. It would also result in the heating and cooling systems working overtime and just overall isn't really that good of an idea in modern day hospitals. Florence was trying to stress that improving air circulation by opening windows would allow for ventilation of stale, stagnant air. Back in those times it was thought that cool night air could cause pneumonia (actually some people still think this today..."Don't go out into the rain without a coat on, you'll catch cold" etc...) so they would keep the windows closed to prevent drafts, cool air, etc since they thought that this was the culpret in causing disease.