(I'm Australian)
62/106 deaths from COVID in Australia have been in nursing homes[1][2].
The point isn't that Australia hasn't done well (it has!). The point is that even in the best possible circumstances it still proved impossible to keep nursing home patients safe.
In Sweden the plan was to keep nursing homes isolated too, and it didn't work there either.[3]
[1] https://www.health.gov.au/resources/covid-19-cases-in-aged-c...
[2] https://www.health.gov.au/news/health-alerts/novel-coronavir...
[3] https://www.thelocal.se/20200506/coronavirus-what-went-wrong...