Director-general of health Ashley Bloomfield yesterday confirmed the results after earlier announcing there were eight new cases, including one in Queenstown and one in Dunedin, meaning there have been six cases across the South.
Dr Bloomfield said the results from Logan Park indicated the Dunedin cases were linked to overseas travel, rather than a possible community link.
"This is reassuring for the local community and for our broader public health response."
The school would reopen
on Tuesday after the Otago anniversary holiday.
Dr Bloomfield said all 150 close contacts would remain in self-isolation for a period of 14 days.
"Over that time, as a further precaution they will be watched carefully for symptoms in case they develop."
In Queenstown, a Spanish man is his 60s being cared for at Lakes District Hospital.
His wife is being tested and is self-isolating and contact tracing has begun, the Southern District Health Board confirmed last night.
A Dunedin woman in her 30s, who had recently travelled to Australia and the United Kingdom, via Los Angeles, has been diagnosed and has mild signs.
She has been self-isolating since returning to New Zealand this week.
The board is also contact tracing in Queenstown in relation to an Australian person, who was in the area while infectious.
"We have been able to reach possible contacts and do not need to publicise his movements as part of the public health response."
The others in the Southern district who tested positive for Covid-19 in the past week remained in self-isolation and were recovering well.
Contact tracing was complete for the first three cases, and was ongoing for the Invercargill man diagnosed on Wednesday.
He was yesterday feeling "85% normal" and looking forward to a full recovery.
He was named as Southland Chamber of Commerce board president and Findex managing partner Neil McAra.
The SDHB issued a list of places Mr McAra had been, where there was a low risk others could have contracted Covid-19 by coming into contact with him.
Mr McAra reportedly has two children at Southland Boys’ and Southland Girls’ High Schools.
SGHS board of trustees chairman Aaron McKenzie said about 60% of pupils attended the school yesterday, which was expected.
"TO date the feedback has been one of understanding and appreciation of the situation as well as support for the school," Mr McKenzie said.
The pupils were well and without symptoms, and there was minimal risk to other pupils, staff or others at the schools, the SDHB said in letters to parents.
A statement by Findex said Mr McAra returned to Invercargill on March 10 after travelling to the Gold Coast and Sydney for business.
Mr McAra said his colleagues had been supportive and wanted to make sure he was looking after himself.
"I’ve received lots of calls and emails, I’m really appreciative of the messages and support.
"I’m feeling 85% normal and looking forward to a full recovery.
"It’s important to remain calm, listen to government advice and prepare ourselves in the best way possible.”
He began feeling unwell earlier this week, and although his symptoms were not consistent with the New Zealand health authority’s guidance, on his insistence he was tested for and confirmed with Covid-19.
By the time he was notified by local health authorities, Mr McAra was already in self-quarantine.
The Findex Invercargill team was now in self-isolation and will not return to the office for a 14 day period, continuing to working from their homes.
There were no other confirmed cases throughout the Findex network.
Dr Bloomfield said all 28 Covid-19 cases in New Zealand now were linked to overseas travel.
There was still no evidence of community transmission in NZ, Dr Bloomfield said.
Yesterday’s other new cases were in Taranaki (2), one in Rotorua, one in Northland and two in Auckland.
The Ministry of Health is contacting up to 1000 close contacts of the 28 confirmed cases.
Healthline will be provided with the details for the people considered close contacts from being on the flights with the new eight cases.
Dr Bloomfield did not have a timeframe for when New Zealand would experience community spread.
"We are watching very closely as to whether we have any community spread.
"We also want to act before we see any evidence of widespread community outbreak."
