There are five new cases of COVID-19 in managed isolation today, and no new community cases.

A statement released by the Ministry of Health says the five cases today include three additional international mariners in the Sudima Hotel Christchurch Airport.

"The three cases today were tested at day nine as they were part of the group who had previously been in close contact with other confirmed cases."

These three are now in quarantine, along with the other mariners who had earlier tested positive.

Of the remaining two positive cases, the first is a family member of a positive case who is a recent returnee and both were already in quarantine in Auckland's quarantine facility.

The other case is a recent returnee who arrived from Ethiopia via Dubai and tested positive as a result of routine testing around day three.

The Ministry of Health says one other case has now recovered, meaning the total number of active cases is 74.

Yesterday laboratories completed 3,038 tests for COVID-19.