With new lockdowns in various parts of Canada there is sign of controlling the number of cases again.
Quebec has a curfew at night Ontario started new lockdown a week or so ago and numbers of cases are declining.

I believe Australia among other nations had strict lockdowns and controlled numbers well.

https://www.cbc.ca/news/health/covid-19-cases-7-day-average-1.5882530

Cases of COVID-19 are declining in many parts of Canada, but experts say those early positive signs are dependent on widespread restrictions.

Quebec, now under a province-wide curfew, has seen new cases decline. Ontario has showed 10 consecutive declines in its seven-day average, a metric that helps to spot long-term trends compared to daily numbers that can spike up and down.