Ashley says the latest case is one of family transmission because the man himself had not travelled to a country with coronavirus. His family had been to Iran.
The man is in self isolation at home and Ashley says man's partner has been ill and is being tested, and is in isolation.
He says anyone travelling on flight Qatar Airways flight QR 0920 can call Healthline for more information.
Family of the man go to Auckland Grammar School and Ormiston Junior College, but the children have had no symptoms and the Ministry of Education said there was no danger to other students.