There have been no changes to the alert levels at this stage.
Minister for Covid-19 Response Chris Hipkins and Director-General of Health Dr Ashley Bloomfield have provided an update.
Hipkins confirmed the three new cases of Covid-19 in the community are a mother, father and daughter from the same household in Papatoetoe.
The mother works for laundry and catering company LSG Skychefs, which services planes at the airport.
Her main duties at the company involved laundry duties, but she was also involved in some of the packing and preparation of food.