The District Health Board (DHB) has been notified of six cases of measles in the last week, with two of those cases going back to late December.
The DHB's chief medical officer of health, Dr Richard Hoskins said the DHB had been working with the families to find out where they might have contracted measles from.
Measles can lead to complications such as pneumonia, seizures, and swelling of the brain, with about 20 percent of measles cases resulting in hospitalisation.
"Measles is easily passed from one person to another. The best form of protection is immunisation."
Read full article here: RNZ - Immunisation call after measles outbreak declared