Health authorities say they discovered three new cases of probable swine flu on Tuesday as they maintain efforts to limit the spread of the virus.
New Zealand now has six confirmed cases of the flu, 15 probable cases and 92 suspected ones.
A group of six passengers who arrived in Auckland on Tuesday morning on a Qantas flight from Los Angeles, have joined the tally of suspected cases.
The Health Ministry says the six, and 16 close contacts of the group, are being treated in isolation in Auckland.
The Ministry says there's still no evidence of swine flu spreading to people who have not travelled to the affected areas or been in close contact with someone who has.
Hawke's Bay students back at school
Thirteen students from Lindisfarne College in Hastings returned to school on Tuesday, after being in isolation for suspected swine flu.
A further 38 people in Hawke's Bay are still in isolation, with one case confirmed.
Lindisfarne College rector Grant Landers says five more students will return to school on Wednesday and a further two on Thursday.