Cases didn't seem to go up that much (yet) in Australia, but I guess that was just due to lower testing.
https://www.ctvnews.ca/health/coronavirus/record-number-of-covid-hit-australians-in-hospital-as-omicron-surges-1.6000832
The number of Australians admitted to hospitals with COVID-19 hit a record of about 5,450 on Monday, official data showed, as the spread of highly contagious new Omicron sub-variants strains the healthcare system nationwide.
The figure has grown since late June, as the BA.4 and BA.5 strains became dominant since they can evade immune protection, whether from vaccination or prior infection, while some experts say the latter can be as infectious as measles.
The number of those in hospitals is the highest since the emergence of the coronavirus, exceeding January's high of 5,390 during the first wave of Omicron infections. Daily death tolls have also risen, topping 100 on Saturday for the first time.
January's reported cases hit a 3 day average high of over 130K daily cases, currently high in Australia is sitting at 51K daily cases. The lower numbers do not mean things are getting better :/