Sixty-six cases have been recorded since the community outbreak was first detected on Monday and a lockdown has been in place since Tuesday.
There are seven people in intensive care with two in a serious condition.
The positive COVID cases range in age from 20 to 80 and while some are in Noumea hospital, others are in hotels set aside for quarantine.
The virus has been detected across the main island and in the Loyalty Islands, in particular in Lifou.
So far about a dozen clusters have been identified, with contacts being asked to isolate and get tested.