Originally Posted by
Traffic_Is_Er_Was
Yet no cabin crew contracted COVID? Do they not breathe the same air? Do they not move throughout the cabin, thus being much more exposed to multiple zones?
Perhaps the HEPA filters were doing more than you think. I would say the infections were more likely caused by contact transmission, given the number of cruise ship passengers on board, and the small number of non-cruise passengers infected.
Routine practice in hospitals is for rooms to have a positive pressure; the clean air comes from the top, the dirty air sucked out at the bottom. I am guessing that is why CC are less likely to be infected, as they will routinely be above the faces of pax.