SA lockdown day 2 updates: Tier 1 exposure sites at Regency Park TAFE

A Barossa winery and sections of Regency Park TAFE are now Tier 1 exposure sites, with all visitors and household members ordered into quarantine.

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A Barossa winery and sections of Regency Park TAFE are among several new Tier 1 exposure sites, after SA's Covid cluster grew to 14 cases.

Seppeltsfield Winery is among the 16 new exposure sites. It has been listed as a tier 1 exposure site, along with parts of Regency Park TAFE, last Monday.

The updated exposure list also includes Clovercrest Shopping Centre, the Tea Tree Plaza food court, Smile Centre dentist at Surrey Downs and parts of Westminster School.

Anyone who has attended these venues at the listed times must quarantine with their family for 14 days, get tested immediately, get tested again on days 5 and 13 and complete this SA Health form. 

Further sites elsewhere on the campus and in Marion, Modbury, Gawler East and the Barossa Valley were listed as tier 2-4 exposure sites. St Ann's College in North Adelaide is no longer considered to be an exposure site.

Meanwhile, the owners of two "super-spreader" sites say they feel powerless and heartbroken over the deteriorating crisis.

At an 11am press conference, Premier Steven Marshall said a brother and sister in their 20s had been infected at Tenafeate Creek Wines, described as a super-spreader location with seven cases so far. Their parents were also at the winery but have so far tested negative. All the people who contracted the virus there had been dining indoors.

The other main site of concern is The Greek on Halifax restaurant. Only 87 of the 216 people at the winery and restaurant have been tested so far. Chief public health officer Nicola Spurrier initially said all would be urgently moved into medi-hotels, along with members of their households.

But late on Thursday, SA Health dramatically revised down the number of people being ordered into medi-hotels to about 100.

Officials said the change was based on a risk assessment, which was ongoing. 

"We are working through the care needs of individuals who have been identified as being at high-risk exposure sites," Prof Spurrier said.

"This process has started with some individuals and household members transferred today."

Prof Spurrier said about 4000 South Australians had been in high-risk "tier 1 or tier 2" locations and had to immediately quarantine and get tested. Among those in quarantine are more than 100 SA Police officers and staff.

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Professor Nicola Spurrier at Thursday's Covid update press conference with Police Commissioner Grant Stevens. Picture: NCA NewsWire / Naomi Jellicoe

Mr Marshall cautioned that despite 17,592 results so far from yesterday's testing, there were still a "huge number" of test results to come in as testing clinics continue to be overwhelmed, with wait times of up to 12 hours reported at Victoria Park. 

To help with the escalating numbers,  four new testing locations have been announced, at Mile End, Warradale, Para Hills and Harbourtown, in a bid to dramatically reduce wait times.

"If we had left this for a further 12 or 24 hours, we would be in a very different situation," Mr Marshall said. "Hopefully, over this seven-day lockdown period, we can stop it dead in its tracks."

Mr Marshall said there were likely to be further cases in coming days but he hoped those people would already be in quarantine or locked down in their family group, as he dodged a question on whether the statewide lockdown was likely to be extended beyond seven days.