Officials warn it's too soon to tell if Wellington dodged COVID-19 outbreak

Wellington has recorded no new community cases of COVID-19, but Director-General of Health Dr Ashley Bloomfield says the city is "not out of the woods yet".

All tests returned negative on Friday after an infected Sydney man spent a weekend in the capital, but health officials haven't given the all-clear yet.

Friday's test results were important because they revealed the first results from the all-important day five tests - but the risk is still real.

"If you were at a location of interest and you've already had a negative test result earlier this week that doesn't completely rule you out," explains COVID-19 Response Minister Chris Hipkins. 

There are now 21 locations of interest - some airport toilets were added to the list today.

Professor Michael Baker says we will be very fortunate if we don't get a case here.

"They were exposed to hundreds of people in crowded indoors conditions in winter so this is the perfect environment."

Of 1750 close contacts, more than 500 have tested negative, but they're still awaiting test results for 1200

"We're not out of the woods and we need people to be tested and maintain our current approach," says Dr Bloomfield. 

Nearly 4000 people were tested in Wellington on Thursday with more testing stations having opened up to cater for demand, including Te Papa's carpark. The museum is itself a location of interest.

The positive case had been given one dose of a COVID-19 vaccine, the AstraZeneca, which has been shown to protect even against the ultra-transmissible Delta variant - which the man likely has.

Being partially vaccinated may have reduced his viral load.

It has been four months since the first COVID jab in New Zealand - this week we hit the one-million mark. Health officials on Friday showed off the online vaccination booking system which will go live on July 28.

Those over 60 will be the first invited to book. The Ministry admits there won't be any measures to check a person's age though, leaving the rollout vulnerable to queue-jumping.