And that's because Australia has, for decades, relied on immigration to staff hospitals. A very (very) senior public servant then in the Commonwealth Department of Health and Ageing told me, a decade and a half ago, that without immigration Australia would not have a public hospital system.
The lazy way works until the source is closed off.
There was a news story yesterday that said Victoria is bringing in 350 medical staff from overseas (through our 'closed' borders of course) to help remove pressure from its hospital system.