Unfortunately, cruise ships always have been petri dishes for diseases. At least with aircraft you're only on it for up to 20 hours (for the long-haul flights), as opposed to being stuck on a cruise ship for days or weeks. It was inevitable that at least one cruise ship would be caught up in the pandemic.
Australia's case count has almost certainly passed 100 today (it was at 93 last night and there have been additional reported cases today). NSW is going to be first to be seriously affected, as it is now just starting to see a serious uptick in the number of cases.
Discussions of quarantine and shutting down all schools, etc. are starting to occur, which can only be a good thing in order to slow the spread.
