On Wednesday, Kiwi health authorities announced 65 border cases, New Zealand's largest single-day case count in quarantine during the pandemic.

As most cases at the border are Omicron, public health experts believe it is only a matter of time before the highly transmissible variant seeps out into the community.

Until then, New Zealand case numbers remain low, with roughly the same number of cases picked up in quarantine as the rest of New Zealand.

The seven-day rolling average of community cases is 30, while the same average for case in quarantine is 29.

Community cases were found in Auckland (nine), Tauranga (five), Wairarapa (four), Waikato (three), Christchurch (three), Rotorua (two), and the Hutt Valley (two).

Hospitalisations have remained largely static this week, with 34 in hospital with the virus, and two in intensive care as of Thursday.

New Zealand's vaccination rates have grown to new highs, with 95 per cent of the population aged 12 and over partially vaccinated, and 92 per cent double-dosed.

Jacinda Ardern's government has set a goal of 90 per cent vax rates in each of New Zealand's 20 district health regions to ensure a wide spread of coverage.

As of Thursday, all but five regions - Northland, the Rotorua-based Lakes, Tairawhiti, Whanganui and the South Island's West Coast - have met that goal, with Northland the furthest back on 85 per cent coverage.

On Thursday, Wellington will become the first region to fully vaccinate 90 per cent of Maori, whose rates lag the general population.

Australian Associated Press