The Ministry of Health confirmed 4626 people flew from Melbourne airport to New Zealand between May 20 to 25.
“These 4246 travellers are being contacted by email and instructed to get a test and self isolate at home,” MoH said in a statement on Sunday.
All but 89 of the 4246 travellers have been contacted and efforts are ongoing to ensure these people are self isolating and being tested.
“The Melbourne cluster reinforces the critical importance of everyone keeping a record of where they have been by scanning QR codes or keeping a manual diary of their movements,” MoH added.
“It can help contact tracers quickly find potential close and casual contacts if there is a positive COVID-19 case in New Zealand.”