Sweeping actions are being taken to prevent the spread of Covid-19 after a community case in Auckland.
But there's no change in alert levels at this stage.
An AUT student who caught the virus, went to work as a shop assistant at A to Z Collections in the CBD while symptomatic.
She had called in sick after being tested and told to isolate, but after talking to her manager went to work wearing a mask.
Director of Public Health Caroline McElnay says everyone living in the student's apartment building - The Vincent residences - has been asked to stay home while testing takes place.
A mobile testing station will be there tonight.
McElnay says health authorities are working closely with the body corporate, and a cleaning company is today doing a deep clean of the common areas - including stairwells, lifts and the lobby.
The student took short Uber rides to work - and those drivers are being asked to test and isolate.
Health officials are confirming places the person visited while possibly infectious.
Listen above as Nick Leggett and Josie Pagani talk about the day's news with Chris Lynch on The Huddle