Photo: RNZ / Tess Brunton
As Auckland heads back to alert level 3 and the rest of country into level 2, a top epidemiologist says he fears the government hasn't made the best use of alert level 1.
Four cases of community transmission of Covid-19 from the same family have been confirmed.
The area for level 3 is the Auckland Super City boundaries (Wellsford in the north to Pukekohe in the south).
Otago University epidemiologist Professor Nick Wilson says the current state of digital contact tracing is disappointing.