'Cause of concern': Worrying detail in 24 new local NSW Covid cases

NSW has recorded its biggest spike of locally acquired Covid-19 cases in four days, with an additional 24 infections announced on Thursday.

Worryingly, half of those cases spent time in the community while infectious, which Premier Gladys Berejiklian said was a "cause of concern".

She warned too many people in the community were "going about their business" as normal.

"We cannot continue to allow that to happen," she told reporters.

"Too many examples we are seeing workers who are leaving the house with symptoms or going to work with symptoms and then inadvertently, as they are going about shopping or other activity, they are passing it on to others.

"If we want the lockdown to succeed, all of us to have minimise our movements, all of us have to minimise our interaction with others."

Seven of the latest cases are yet to have their source identified.

Among the latest cases identified is a second nurse linked to the unvaccinated student nurse who worked at two Sydney hospitals, whose infection is also included in Thursday's numbers. One of her household contacts is also positive.

Two new cases are linked to the West Hoxton birthday party, which now stands at 41 cases. There was one new case linked to the Joh Bailey Double Bay hairdressers and one new case linked to Lyfe Cafe Bondi Beach, taking those outbreaks to 13 and 25 respectively.

Two people have also tested positive to the virus that were on flight VA524 from the Gold Coast to Sydney on Saturday.

New exposure sites include BWS

Exposure sites linked to the latest cases will likely take the number of locations and transport routes where transmission may have occurred to over 400 since the outbreak began.

Chief Health Officer Dr Kerry Chant identified Maroubra's Pacific Square Shopping Centre as a venue of concern after a case was infectious there between June 23 and June 30.

Later on Thursday, NSW Health identified more than 10 close contact exposure sites including a BWS in Burwood.

Five of those were in the inner-west suburb and all exposure times are listed for last Saturday.

Club Marconi in Bossley Park was also listed as venue of concern for last Friday.

Eight additional casual contact sites were listed, including a Chemist Warehouse in Bondi Junction and a Woolworths in Avalon Beach, the epicentre of NSW's Northern Beaches in December.

The number of community cases since an unvaccinated limousine driver ferrying international air crew tested positive on June 16 now stands at 195.

There were 22 local cases announced on Wednesday

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