Air ways

From the pictures of the Excel Nightingale internal construction, I suspect we're going to have to learn some new medical terms.

It doesn't look much like there are going to be tight seals between 'rooms'. Negative pressure is one the ways of keeping droplets of infection confined; that's why big doors seal the entrances to traditional Intensive Care Units.

So it may be that this is a hospital for so-called cohort treatment, where only confirmed cases go. And that they'll either be connected to Non-Invasive Ventilation systems, with moistened oxygen supplied through face-masks that cover the mouth and nose, or High Flow Nasal Oxgyen, with the oxygen supplied via a cannula up the nose. These are alternatives to the standard oxygen therapy, by which an endotracheal tube is inserted through the mouth and into the airway before connection to a ventilator.

Hence the big canisters of oxygen outside the sheds.