Measles outbreak: 18,000 MMR doses on their way to Christchurch

An urgent batch of the measles vaccine is heading to Canterbury.

A number of clinics have run out of the MMR vaccine, with two months' worth being used up in just two days.

"The first shipment of 2880 vaccines arrived today at a central cold chain storage facility in Christchurch," Canterbury DHB Medical Officer of Health Dr Ramon Pink said on Friday.

"We have now had it confirmed that there are an additional 18,000 doses due in Christchurch next Wednesday."

The number of confirmed measles cases now stands at 15.

Measles is highly infectious - if you come within two meters of an infected person while unimmunised, you have a 90 percent chance of contracting the disease.

Patients between five and 28 who have had one or no jabs so far will be prioritised, followed by children under five then adults 29 or over who've only had a single dose.

If you're not sure if you've been vaccinated, health officials say it's safe to get another jab just to be sure. It's free if you're eligible for funded healthcare, and about $500 for those who aren't.