While Australia is an island (a very large continent-island) they have demonstrated that it is possible to contain covid. They are using measures that are very familiar to all of us: wearing masks, social distancing, contact tracing.
Australia’s most populous state said that from Monday it would remove limits on the number of people at weddings, bars and religious services and end a ban on public venue dancing as a run of coronavirus-free days prompted a broad downgrade of social distancing rules.
Though Australia has reported some new coronavirus cases in returned travellers in quarantine, the country has largely stopped community transmission of the virus with contact tracing, distancing measures and mandatory mask-wearing.
Source: COVID-free for days, Australian state resumes singing, dancing, religious services