If you want to get rid of the virus, you can, but you have to suck up the costs: shut down your borders and do whatever it takes. Close down internal travel: domestic flights were virtually shutdown in NZ; Ozzie’s had other overland travel restrictions between states etcetera. Stay at home: fuck the economy for a while, but then you all can relax.
NZ is about the same size and population as Oregon, so a single state could choose to do it, if they were willing to face up to the implications of the choice.
There is still time to do it now, to give yourselves enough time to vaccinate people that would be network nodes in the transmission graph, and health workers, and the at-risk population.
Or be honest like Sweden and decide that some deaths and chronic repercussions are acceptable costs (versus the alternative economic and human damage.)
But don’t give lame just-right excuses like “Australia is an island with a population almost half California.” Oz has a higher population than every other state except Texas, so....
[1] https://tia.org.nz/about-the-industry/quick-facts-and-figure...