Health teams yesterday revealed a 58-year-old Auckland man, identified as Case A, was the first person to test positive in the latest outbreak.
Six more cases have been announced today - four in the morning and two during the 1pm Covid press briefing.
They include a workmate of the Devonport man and five cases linked to the workmate.
Here is what we know about the cases.
• Case A is a Devonport man, 58, who was the first case identified yesterday. He is described as a tradesman.
• His workmate, a 29-year-old man, also tested positive.
• Three of the workmates' flatmates have also tested positive. They are a 25-year-old female teacher at Avondale College, an Auckland Hospital nurse, 21, and a man aged 20.
• Two friends of those living in the flat have also tested positive. They are a 21-year-old woman and a man aged 19.
Case A has not been vaccinated and locations of interest are connected to him in Auckland and Coromandel. However, health teams said he was very good at scanning into places he visited using the NZ Covid Tracer app.
His wife is fully vaccinated and has now returned two negative Covid test results.
The man visited about eight private homes. Another 15 locations of interest listed on the MoH website were places where members of the public could have visited.
Prime Minister Jacinda Ardern confirmed genome sequencing had linked the Devonport man's Covid strain to the New South Wales outbreak.
The infected nurse is fully vaccinated and believed to have been asymptomatic. The Auckland District Health Board is now having an internal lockdown as it rushes to prevent a Covid-19 outbreak at Auckland Hospital.
Director-general of Health Ashley Bloomfield said the woman worked four shifts while potentially infectious.
He said the hospital was testing staff and limiting the movement of staff within the hospital to prevent cross infection.
The father of the Auckland Hospital nurse said his other daughter, the teacher who also lived at the flat, had tested positive.
She has not been vaccinated, the father said.
One the two women also attended a North Shore church on Sunday morning with her fiance, who had not yet tested positive but was self-isolating and experiencing symptoms.
They had also gone to a nightclub in Auckland's central city on Sunday night.
Bloomfield said the Central Auckland Church of Christ in Freemans Bay and SkyCity casino were important locations of interest.
A partner of one of the women and who is not living in the flat is awaiting his Covid test results, but is believed to be experiencing symptoms.
The father said his family also has concerns for their daughter's grandmother, who is 80. They had visited her on Monday at her home in Titirangi, and she had subsequently gone to a bowling club and shopping at a local supermarket.
She was now isolating at home and waiting for health officials to come and give her a Covid test. She had received one dose of the Pfizer vaccine.
The father said his daughters and their flatmates sought tests yesterday afternoon after learning about their connection to the original case. None of them had experienced any major symptoms.
Earlier, a caller to radio station Newstalk ZB claimed his employee is the fiance of the Covid-19 infected nurse.
He gave his name as Sam and blasted the Ministry of Health's contact-tracing system, saying his workplace hadn't heard from them despite his employee being as "sick as a dog".
Sam told Kerre McIvor his employee was waiting for his Covid-19 test results.
"[It] sounds very likely that he'll be positive, he got sent home from work yesterday about 1 o'clock, he was sick as a dog."
"[My employee] has basically been at work Monday and Tuesday mornings. Over 20 people in close contact and we've not had one phone call from the Ministry of Health to tell us that our workplace is a potential exposure site.
"I just think the whole system, it needs a kick up the arse."
Minister for Covid-19 Response Chris Hipkins said it was possible contact tracers using the NZ Covid Tracer app would find more community cases among people who weren't showing symptoms of Covid.
He also expected the number of locations of interest to grow.
Ardern earlier said the fact a fully vaccinated nurse was able to contract the new delta Covid variant didn't show the vaccine had failed.
The vaccine has been shown overseas to in the most part prevent serious illness and hospitalisation, she said.
