The hub – announced on March 31 after tender documents for the site were revealed a week earlier – will open for its first vaccinations at around 12:00pm today.

The SA Health-run site is a dedicated Pfizer facility and will initially target frontline workers who are under 50 years old and in phase 1b of the vaccine rollout.

The State Government says the 3000-a-week vaccination target will depend on Pfizer supplies from the Commonwealth.

The Wayville Showgrounds is the first of three mass vaccination hubs planned for SA, with the former Masters Hardware site in Noarlunga and the Playford Civic Centre in Elizabeth due to be transformed into clinics by June.

The future of the Showgrounds site will be reviewed in two months’ time.

The latest vaccination data from the Commonwealth shows SA Health has administered 56,642 COVID-19 vaccines as of Wednesday, April 28, including 1164 jabs given on Tuesday.

In total, 155,478 vaccines have been administered in SA.

GPs and primary care centres have shouldered the bulk of the state’s rollout (82,523 doses), while 16,313 vaccines have been given in Commonwealth Aged Care Centres.

The national vaccine rollout appears to be gathering momentum after Australia on Thursday surpassed 2.1 million doses administered.

This includes more than 80,000 shots administered across the country in the most recent 24-hour reporting period.