There are 10 new Covid-19 cases in two days within the country's managed isolation and quarantine facilities.
In a statement, the Ministry of Health said the new cases reported today were recent returnees.
"Cases 1-4 were in a travel bubble together. As is our standard protocol, any cases detected after day 3 are investigated further."
There are no new cases in the community.
On travellers from Melbourne, the ministry said the original cohort now sits at 4789.
Of those 4789 travellers:
- 1626 require no further action as they have returned to Australia or have reached the 14-day post exposure date
- 2933 have returned a negative test result
- 203 are exempt from testing because they are under the age of 12
- 27 have no test result as yet.
"Contact tracers have emailed and twice called each of these 27 travellers and will be recording test results as and when they are logged. If a negative test result is logged, they are removed from this list and added to the number of people who have already returned a negative test result," the ministry said.
Of 371 crew members:
- 239 have returned a negative test result; and
- 132 crew members have either no result as yet or require no further action
The seven-day rolling average of new cases detected at the border is now three and five previously reported cases have now recovered.
The ministry said since 1 January 2021, there have been 67 historical cases, out of a total of 520 cases.
The total number of active cases in New Zealand today is 22 and the total number of confirmed cases is 2336.
To date there has been a total of 2,171,925 Covid-19 tests processed. On Sunday, 2101 tests were processed and on Monday, 1893 tests were processed.
The seven-day rolling average is 4076.
The ministry said the testing data does not include the number of tests processed by Waikato DHB, as their systems remain down.
At its last update on Sunday, there was one new case of Covid-19 reported in MIQ facilities in the previous two days and no new cases in the community.
Today's announcement coincides with the start of special "green flights" from Melbourne, which have been arranged so that New Zealand residents, critical workers and those with humanitarian exemptions can escape a two-week lockdown in Victoria.
All travellers have to test negative before their flights to New Zealand.
Victoria is battling to trace multiple clusters, including the first community cases discovered in Australia of the more infectious Delta variant which has spread rapidly through India and the UK.