Though bear in mind that in Australia that hardly anyone has had covid unlike in South Africa where in some regions the majority have had covid already. Plus in the UK many more have had covid % wise than compared to Australia.
If that is replicated in Australia then it is more the findings for people who have not already had covid that is most relevant.
People who test positive for Omicron are 15-20% less likely to be admitted to hospital compared to those infected with Delta, according to a new study in England.
Those with Omicron after a previous infection are 50-60% less likely to be hospitalised, compared with those with no previous infection.
The risk of hospitalisation is similar for Omicron and Delta in people who test positive and previously had at least two vaccine doses, the research concluded.