A measles outbreak in the upper half of the North Island has led to a spike in the number of children being vaccinated against the highly contagious virus.
Ministry of Health vaccine distribution figures showed a "significant increase" in demand for the measles, mumps and rubella (MMR) vaccine this year, ministry immunisation manager David Wansbrough said today.
More than 120 cases of measles have been reported since the outbreak began in Auckland in May.
Waikato District Health Board (DHB) yesterday confirmed 17 cases - all in teenagers - in the region, with eight more suspected cases.
Health authorities fear the virus may have spread to Northland after a three-year-old with suspected measles went to day care during the infectious period.