There 12 new community cases of Covid-19 reported in New Zealand today, with all but two epidemiologically linked to previous cases, the Health Ministry says.

In a statement the Health Ministry said there are now a total of 1177 community cases associated with the latest outbreak of the Delta variant of the virus.

All of the latest cases were identified in Auckland.

The ministry said one of today's community cases had previously been under investigation and is now confirmed and linked to the current outbreak. "The case has now recovered. The case spent 14 days in a quarantine facility along with household members who also tested positive for Covid-19."

There are no new cases to report in managed isolation facilities today.

There are 13 cases in hospital - Six in Auckland, five in Middlemore and two in North Shore hospitals. Four are in ICU.

The ministry said all of today's cases have been in isolation at home or in a managed isolation facility.

There are now 1160 community cases in Auckland (including four cases in Upper Hauraki - all of whom are in the same household) - 948 of those have recovered. In Wellington, there are 17 - all of whom have recovered.

Yesterday 18 new cases were announced with all but two linked to previous cases.

Since 1 January 2021, there have been 160 out of 2020 historical cases.

The ministry said 928 active contacts are being managed - 92 percent of those contacts have been contacted.

As at 10am this morning, there are still 117 locations of interest.

In the last 24 hours, 6906 Covid-19 tests have been processed - 3873 of them were in Auckland. In total, the number of tests processed to date is 3,336,535.

There have been no wastewater detections in the last 24 hours.

To date, 3,239,791 New Zealanders have had their first dose of the Covid-19 vaccine and 1,806,110 have had their second. Yesterday, 24,710 were administered - 8182 of those were first doses and 16,528 of those were second doses.

The ministry said testing is continuing across Auckland with a particular focus on Clover Park, Mangere, Favona, Otara, Manurewa and Mount Wellington/Sylvia Park.

"In some cases, public health staff have been sending mobile testing units to areas where there have previously been cases and encouraging residents to get tested at their home.

"If you do receive a knock at your door, we'd strongly encourage you to take up the opportunity to get tested and if haven't already been vaccinated, to do so with one of the registered vaccinators on board the mobile unit."