Three further cases of measles have been confirmed in an outbreak which stemmed from a hip-hop event in Sydney - two in Wellington.
The confirmed cases bring the total to 14 since the first case with links to World Supremacy Battleground in Sydney was confirmed in late December.
The first was a young woman in Auckland, and there are now 11 cases in the Turangi-Taupo area and two in Wellington.
There are also three confirmed cases in New South Wales.
The two affected people in Wellington have been in isolation since the first New Zealand case was confirmed.
All those affected so far are people who were either at the event, or in direct contact with someone who was at the event.
About one in 1000 people who get measles in New Zealand died but, as with any outbreak, and there is a risk of complications.
Anyone born before 1969 is considered likely to be immune to the infectious disease, as are those who have had the MMR - measles, mumps and rubella - vaccine, introduced in 1990.
But those vaccinated in the 1970s and '80s may be at increased risk, as there is uncertainty over the effectiveness of the shots they received, depending on the age at which they received them and the way the vaccine was stored.
Anyone found to have been in contact with an infected person, and who is unsure of their vaccination status, is being given a blood test to check for antibodies.
Anyone found not to have immunity is asked to stay in isolation for 10 days to see whether symptoms develop.
If anyone thinks they have measles symptoms they should call their GP or Healthline on 0800 611 116.
- © Fairfax NZ News
What are you doing in preparation for the big storm this weekend?Related story: Wellington in for severe weather