The importance of being immunisation is being highlighted by the outbreak of measles in Hamilton.

Measles

A total of 77 cases have now been confirmed, jumping from 60 less than a week ago. Of those affected, only four people had been immunised with the recommended two doses of the MMR vaccine and three had received one injection.

Fraser High School is still worst affected, and there have also been confirmed cases at at Nga Taiatea Wharekura, Raglan Area School, Hamilton Girls' High School and Hamilton Junior High School.

Hamilton's public health unit is currently investigating another 14 suspected measles cases throughout the city.

The five people who were hospitalised with the contagious disease have now recovered.

Associate Health Minister Jo Goodhew is urging families to make sure they're immunised against measles before heading away for the upcoming school holidays.