Queenstown residents are being warned they could have been exposed to measles.
A fourth case of measles in Queenstown has been confirmed, and there are concerns others could have been infected.
The Southern DHB says an infected resident was at multiple locations between August 28 and September 1, including the Remarkables Ski Field.
It is urging the public to check their immunity to measles.
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As of September 3, there have been 975 confirmed diagnoses of measles in New Zealand in 2019. More than 800 of those are in the Auckland region.
Health officials are warning the outbreak could kill. More than one-third of people who have been diagnosed have been hospitalised.
"The fatality rate is about one in a thousand but that doesn't mean you have to reach a thousand before someone dies," Auckland medical officer of health Dr William Rainger told Newshub on Monday.
"Someone could die at any time it just means the more numbers, the more likely it is there will be a fatality."
If you suspect you have contracted measles, health officials ask you call your doctor's office and remain quarantined away from others as the disease is highly contagious.
Newshub.
