AFLW player Deni Varnhagen's ongoing challenge to South Australia's COVID-19 vaccination rules will spill into a second week after the state's police chief was too ill to give evidence.
Ms Varnhagen, who plays for the Adelaide Crows, also works as a casual registered nurse but has lost shifts since refusing a COVID vaccination and is contesting the state's mandate that health workers be inoculated.
The matter is expected to continue on Wednesday when SA police chief and state emergency coordinator Grant Stevens is due to appear.
Justice Judy Hughes on Friday continued to hear evidence from vaccine scientist Nicholai Petrovsky.
Current vaccines do not help reduce the transmission of COVID-19 and a program of testing and physical isolation would be more effective, Prof Petrovsky said.
State government virologist Steve Wesselingh also took the stand and rejected some of Prof Petrovsky's evidence, including that vaccinated people were three times more likely to spread COVID.
As more people are vaccinated, there will be fewer unvaccinated people exposed to the virus and therefore fewer of them will contract COVID, Prof Wesselingh said.
Ms Varnhagen's legal team has sought to question senior bureaucrats involved with implementing the vaccine mandate as part of the SA Emergency Management Act.
Chief Health Officer Nicola Spurrier needed a police escort as she was heckled outside court on Thursday, when she was excused from taking the witness stand.
A smaller crowd gathered outside court on Friday and applauded Ms Varnhagen.
The 29-year-old has been forced to work as a labourer after losing her regular work, the court has been told.
The Crows shifted the midfielder to the inactive list after she refused to be vaccinated.
Ms Varnhagen has been joined in the matter by several other people.
Closing arguments are expected once Mr Stevens has given evidence.
