There's a warning passengers who travelled to Auckland on a Malaysia Airlines flight from Kuala Lumpur may have been exposed to measles.

It's flight MH133 that arrived at Auckland Airport at 11pm on Sunday15th April.

Auckland Regional Public Health Service has been contacting passengers seated in rows 28 to 44.

Medical Officer of Health, Dr Josephine Herman, says there is a possibility other passengers on the flight may have been infected on the plane, at the gate or at the baggage claim.

She says the airborne measles virus is very easily transmitted from one person to another.

Passengers feeling unwell should telephone their doctor before visiting the practice, or call Healthline for advice.