A Ministry of Health spokesperson said the community and public health team is developing an exit plan for the fishermen.
"This will involve a risk assessment for their release, including any testing requirements."
The spokesperson said they want to acknowledge the work being done at the Christchurch managed isolation and quarantine facilities.
"So far this year, hardworking staff across these facilities have supported more than 5,000 people in their return to New Zealand.
"It's really important to emphasise the overall success of this work - it's the hard work of teams at these facilities which is ensuring we have the best support in place to help keep New Zealand and New Zealanders safe."
All contacts of the two confirmed cases have been followed up and tested and all results we have returned to date are negative, with a small number outstanding.
All staff who worked at the Sudima Christchurch Airport Hotel since October 23 have been tested, and all the results have returned negative.
"At this stage we have not identified any further cases connected to these staff members, but we are continuing ongoing monitoring of their contacts and of other staff at the Sudima."