One new Covid-19 case in managed isolation and quarantine (MIQ) and two historical cases are being reported today.
In a statement the Ministry of Health said one of the historical cases was a previously reported case that had been reclassified, and there were no new community cases.
On Wednesday six new cases of Covid-19 were reported in managed isolation and quarantine facilities.
The seven-day rolling average of new cases detected at the border is two.
Two cases recovered, so the total number of active cases in New Zealand today is 17 and total confirmed cases is at 2325.
Laboratories processed 5916 tests yesterday, bringing the rolling seven-day average to 4751.
Earlier today, the Ministry of Health revealed it had earlier missed 177 people who had travelled from Melbourne after the state of Victoria went into a lockdown because of a Covid-19 outbreak.
Director-General of Health Dr Ashley Bloomfield also spoke after the release of a review of transmission of Covid-19 cases at the Grand Millennium and Grand Mercure MIQ facilities in Auckland earlier this year.
The report found infection was most likely to have been through via aerosol transmission.
In March, three MIQ workers at the Grand Millennium tested positive for Covid-19, and it was later revealed one of the cases - known as Case B - had not been tested for a number of months.
The report recommended improving barriers to staff testing and vaccination and continuing to improve data management systems.
The review of Covid-19 infections the Grand Mercure found the overall risk of in-facility transmission was low, but also said procedures on transporting returnees for exercise were breached.
Victoria today recorded two new local coronavirus cases, taking the state's outbreak to 63. Subject to public health advice, regional Victoria is set to ease restrictions after 11:59pm tonight, while metropolitan Melbourne will remain in lockdown for another week.