A measles outbreak which has infected more than 120 people in the upper North Island is continuing to spread.
There have now been 109 confirmed cases in Auckland, where the outbreak originated, and 19 confirmed and one suspected case in Waikato, one of which has required hospitalisation.
Cases have also been reported in Taupo and Northland.
Medical Officer of Health Dr Anita Bell said of the 20 Waikato cases, 19 had not been immunised and one had received only one of the recommended two doses of the measles, mumps and rubella (MMR) vaccine.
"This is a testament to the effectiveness of the MMR vaccine in protecting people who are fully immunised.