All 16 close contacts of the woman in Northland with COVID-19 have returned negative test results.
255 of the 353 departed guests from the Pullman Hotel, where the woman stayed in managed isolation, have returned negative tests. The remaining 98 guests are still being tracked down for testing.
All staff at the Pullman Hotel have returned negative results.
Of the 327 people who visited locations the Northland woman visited, 127 have returned negative results.
Authorities couldn't yet say how the Northland woman contracted COVID-19 during her stay in managed isolation.
10,812 tests were processed on Tuesday.
Director-General of Health, Ashely Bloomfield, said the situation was encouraging, but cautioned things were still evolving, so he wasn't breathing out just yet.
Separately, there are four new cases of COVID-19 in managed isolation/quarantine, bringing the total number of active cases up to 68.