More than 100 cases of measles have been confirmed in Waikato during the latest outbreak, with the vast majority of patients not fully immunised, Waikato District Health board says.
Over the past two months 114 cases had been confirmed and only four of those were people who had been immunised.
Waikato DHB medical officer of Health Anita Bell said immunisation was the best protection from the potentially serious disease.
"Immunisation protects not only the individual, but also blocks the spread of this disease within our communities."
Unimmunised people who had been in contact with a person with measles, would normally be advised to stay at home and away from all public places, school or work for 14 days after their contact.