Anyone who developed symptoms should stay home and phone their doctor or Healthline on 0800 611 116, said clinical director Lavinia Perumal. They should not go to the doctor or hospital without calling in first.
Early symptoms include fever, cough, runny nose and sore and watery “pink” eyes, followed by a blotchy rash.
Other contacts include their household members and some work colleagues. They were not infectious when they flew into New Zealand, ARPHS said.
The patient was being cared for in isolation at the hospital.
“Our first priority is to respond to this single case to stop further transmission,” Perumal said.
She urged people to make sure they and their children were up to date with their vaccinations - which are free for everyone under 18, and for New Zealand residents 18 and over.
Measles is an incredibly infectious disease, which Perumal said was “very serious”.
“It is important that people travelling overseas make sure they have had their MMR so they do not bring the virus back into the country.”
The latest case was Auckland’s fourth this year, all linked to overseas travel.