The new mandate, effective as of 5pm on Thursday, applies to all clinicians, ambulance workers, allied health workers, cleaners, administrative and executive staff and students on placement, regardless of whether they work in a patient or a non-patient area.

They must also be able to show evidence of a booking to have a second dose within one month of receiving the first dose.

Those who provide a medical certificate can be exempt from the new rules.

The new direction follows national cabinet’s agreement last week to mandate vaccines for healthcare workers.

The Australian Health Protection Principal Committee, the Federal Government’s peak health advisory body, recommended the move for all states and territories across all healthcare sectors.

A similar vaccine mandate came into force on Thursday for truck drivers entering South Australia, following the detection of nearly a dozen COVID-positive cases linked to interstate truck drivers over the last month.

All Australian aged care workers are also subject to mandatory vaccination.

Hundreds of South Australian aged care staff were legally banned from working in the sector last month after failing to receive a vaccine by the September 17 deadline.