The Ministry of Health (MoH) has announced there are 14 new cases of Covid-19 in the community today - and an "unexpected" detection of the virus in wastewater north of Auckland.

Director General of Health Dr Ashley Bloomfield says all the new cases are linked to existing cases but three people were infectious while in the community, creating 10 new exposure events.

There was an increase in testing yesterday in Auckland with 10,341 new tests completed.

A worker at the SO/Auckland managed isolation facility had tested positive to Covid as a part of regular testing, he says. The worker was fully vaccinated and is now in quarantine. The Herald first revealed the positive result this morning.

On wastewater testing, there was one "unexpected detection" of Covid from Snells Beach, north of Auckland, according to the Ministry of Health. 

It was from September 7 - a delay due to a logistical issue - and additional testing is underway.

Meanwhile, Covid-19 response Minister Chris Hipkins said the pause on new managed isolation bookings for returning Kiwis would be lifted on Monday September 20.

That was due to an easing off of demand from local community cases needing isolation rooms.

A new MIQ booking system that aimed to make it fairer and easier for returning Kiwis to book managed isolation rooms was also due to be launched, Chris Hipkins says.

Dr Ashley Bloomfield says there was huge support among doctors for the nation's vaccine program with a petition now circulating among doctors to show their support.

He says New Zealand had a fast approval process and was keeping up to date on the latest and most effective treatments for Covid 19.

He outlined three main categories of treatments for Covid that are being used or under consideration in New Zealand.

Ashley says all treatments of Covid complement rather than replace vaccines.

Approximately 250,000 doses of Pfizer vaccine purchased from Denmark had just arrived at Auckland Airport.

He said more than 70% of eligible Kiwis had now received one dose of Pfizer, 36% have had two doses, and 90% of those aged over 60 have had their first dose

The main age group where "a lot of work" was needed to be done to boost vaccine numbers was with those under 40.