Passengers on an Air New Zealand flight from Brisbane to Auckland in February may have been exposed to measles.

Travellers flying from Brisbane to Auckland 11 days ago may have been exposed to measles, and people who feel unwell are being urged to contact their local doctor.

Two confirmed measles cases were passengers on an Air New Zealand flight from Brisbane to Auckland on February 23 at 11.15am, Auckland Regional Public Health Service’s medical officer of health Dr Richard Hoskins says.

He says the airborne disease is infectious and anyone who has caught measles from those passengers would start to feel unwell by Sunday, if they didn’t already.

Passengers who sat nearest the infected passengers will be contacted by their local public health service as they have the highest risk, Dr Hoskins says.

Anyone who was feeling unwell should call their GP.

Measles is highly contagious and starts with a fever and can cause a runny nose, cough and sore red eyes.

After a few days a red blotchy rash appears which lasts for up to a week, although the disease can be passed on before the rash appears.

There is no treatment for the illness, and vaccines are the only way to avoid catching it.

About one in 10 people with the disease are hospitalised.