There’s no hard information yet on what is happening, but there are some worrying signs. At this state, we don’t know.
Might be a wise precaution to order some face masks, e.g. on eBay.
UPDATE: Coronavirus: 10 more suspected cases in Australia investigated. By Natasha Robinson.
There are now five confirmed cases of coronavirus diagnosed in Australia – four in NSW and one in Victoria.
Six of the ten new suspected cases under investigation are in NSW, and four are in WA.