The 4374 new cases reported today is a significant decrease from yesterday’s 5054 infections. 

But another six people have died after testing COVID-positive, including a woman in her 70s, three women in their 90s and two men aged over 100.

South Australia’s COVID hospitalisation rate is edging closer to the estimated peak of 400, with 358 people currently admitted to hospital with the virus.

Of those, 12 are in intensive care, but none are on a ventilator.

It comes as Professor Nicola Spurrier, who is currently isolating at home with COVID, said that although University of Adelaide modelling indicated the peak of the current infection wave would arrive this week, the new subvariants BA.4 and BA.5 meant that was uncertain.

The number of people admitted to hospital with COVID-19 is likely to spike about two weeks after South Australia reaches its caseload peak.

Latest genome sampling shows 18 per cent of samples analysed were BA.4, while 56.7 were BA.5 or a related variant.

The testing rate has dropped by 9.8 per cent over the past two days, with 10,526 people receiving a PCR test yesterday.

There are currently 28,592 active COVID cases in the state.