Bluff wedding guest describes harrowing reality of having COVID-19

As New Zealand's number of new COVID-19 cases drops for the fourth day in a row, the country's largest cluster continues to grow.

Although the Bluff wedding had less than 70 guests and everyone there thought they were doing everything right, 87 people associated with attendees have contracted the virus. Six of this number were new cases announced on Thursday.

Wedding guests Murray Culbert and wife Linda are two people who contracted the virus from the March 21 event.

"The last thing we were thinking is that we'd actually catch it," Murray told Newshub.

One week after the wedding, Murray was told a guest had tested positive. Then he found out he'd contracted it too.

"It got to the stage where I was hallucinating, even had a fever of 39.7C consistently over three nights, had a sore throat, breathlessness, and just over the last few days I've struggled a bit and I've got bronchitis," he said.

Both his wife and daughter had caught the virus too.

Murray says there were no overseas guests at the wedding, but one person had recently travelled for their job.

"We had somebody that came to the wedding that is cabin crew for an airline. It's a possibility there's no proof of that, but that person has turned out positive as well."

The wedding is one of 12 clusters around New Zealand. 

Twenty-nine new cases were announced on Thursday bringing the total to 1239. Fourteen of these cases are in hospital, with four in the ICU. A total of 317 people have recovered.

Thursday's number of recovered cases was 35, making it higher than the number of new cases.

Prime Minister Jacinda Ardern is confident the lockdown is breaking the chain of transmission.

"We are turning a corner, and your commitment means our plan is working," she said during Thursday's COVID-19 daily update.

University of Auckland professor of physics Shaun Hendy says New Zealanders will need to be patient for a while to ensure the virus numbers don't bounce back.

"We've just got to hang on now for a while, because if we do let up we have the possibility for it to bounce back.

"If we hadn't gone into lockdown, we'd be looking at somewhere between 150 and 200 new cases a day at the moment and that would start growing exponentially."

Continuing to contain a virus - something that the Bluff wedding guests know is capable of spreading rapidly.