Another case of measles has been reported on an international flight between Auckland and Sydney late last month.
The person departed Auckland on Air New Zealand Flight NZ711 just before 8pm on Friday, August 23.
They then returned from Sydney on Flight NZ108, which departed at around 7.50pm on Sunday, August 25 and landed in New Zealand at 12.15am on Monday, August 26.
The person reportedly did not know they had measles at the time.
Auckland Regional Public Health Service (ARPHS) medical officer of health Dr William Rainger said people who may have been in contact with that person should be vigilant for symptoms of the highly infectious disease.