'Son of Omicron' variant has been detected in Australia, authorities said

A strain of Omicron that is even more contagious than the original variant has been detected in Australia, authorities have confirmed.   

The new BA.2 subvariant has swept across Europe and already makes up 45 per cent of all cases in Denmark.

So far the 'stealth' variant doesn't appear to be more dangerous. 

However scientists fear it could also be even harder to track than previous strains as it can only be confirmed through lab analysis rather than a PCR test.