South Australia will begin vaccinating aged care workers against coronavirus amid concerns about the Commonwealth's rollout.
The federal government is responsible for administering the vaccine in aged care but this week admitted it had no idea how many staff had received jabs.
Premier Steven Marshall says anyone working in residential facilities in SA will now be able to access the Pfizer jab at mass vaccination hubs.
"At the moment, the percentage of aged care workers that are fully vaccinated is way too low," he told reporters on Thursday.
"That's why we're using some of our capacity within the state system to get as many people in that vulnerable setting as protected as they possibly can, as quickly as they can."
Asked whether the state might also step in to vaccinate aged care residents, Mr Marshall said SA Health would do whatever it takes to keep people safe.
"Where we've got excess capacity, we don't care whose responsibility it is, we're just going to do whatever we can to protect South Australia," he said.
A two-year-old boy, meanwhile, was taken to the Women's and Children's Hospital after testing positive to the virus upon arriving from overseas.
Chief Public Health Officer Nicola Spurrier said while the boy was "very unwell", his family had tested negative.
Passengers from their flight will be required to have an additional COVID test on day three of their quarantine period.
A man in his 60s whose case was reported on Wednesday was taken to Royal Adelaide Hospital and is in a stable condition.
