Highly infectious Omicron subvariants ‘driving new wave’

Pressure is mounting for a fourth dose of vaccine to be offered to all adults
Associate Professor Paul Griffin
Associate Professor Paul Griffin.

A third Omicron wave is taking off in Australia driven by the highly infectious BA.4 and BA.5 subvariants, which are set to become dominant in a matter of weeks, experts say.  

On Monday, nearly 30,000 COVID-19 infections were reported around the country, while hospitalisations had reached 3511 — the highest figure since February.