It appears that the hospital area is pressurized, given that an "open air promenade" is separately called out as such. Also, the main threats from chronic tube

It appears that the hospital area is pressurized, given that an "open air promenade" is separately called out as such. Also, the main threats from chronic tuberculosis were lung hemorrhage and inanition (wasting) -- not hypoxemia. For whatever reason, the term "antibiotic" is customarily not applied to anti-tuberculous medications, even though, technically, it applies. "Antibiotic" usually refers to anti-bacterial drugs that are given for a short period of time (a couple weeks), but the definition is hard to pind down. Anti-tuberculous treatments go on for months.