A list of exposure sites linked to New Zealand's latest outbreak continues to balloon

So far, fifty-one Covid-19 community cases have popped up since the Auckland cluster was caught on Tuesday.

Contact tracers have pinpointed more than 170 locations of interest - visited more than 200 times.

The majority are in Auckland with more than a dozen locations also in Wellington and the Coromandel.

North Island towns including Bulls, Waiouru and Tokoroa now have locations on the list.

A staggering nearly seven-thousand Auckland secondary school students are deemed close contacts.

They're from De la Salle College, McAuley High School, Avondale College, Northcote College and Lynfield College.

It's also been revealed a student who later tested positive attended an Auckland University ball - with 500 attendees.