3 cases of measles have been confirmed in the South Island in the last 4 days.
The cases were reported in Queenstown, Wanaka and Christchurch.
Health authorities say it appears Queenstown Airport was the location for the exposure in all three cases.
None of those infected were immunised.
Canterbury medical officer of Health Dr Ramon Pink says people with symptoms shouldn't visit their GP or after-hours clinics, but phone their doctor for advice.Â
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