Authorities issue fresh warning after measles case confirmed in Sydney

A new measles case has been discovered in Sydney, with passengers on a busy domestic flight being warned to check for symptoms.

NSW Health said passengers on a Qantas flight from Adelaide to Sydney on December 29 should monitor for symptoms after a third person who returned from Southeast Asia contracted the disease.

The flight was QF748, which arrived in Sydney at 10.30pm; people who were in the domestic arrivals hall at Sydney Airport's Terminal 3 at around 11pm are also being warned to monitor for symptoms.

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The infected person was also confirmed to be at the Concord Repatriation General Hospital Emergency Department from 1.00pm to 4.10pm on Saturday.

People who were on the flight are being told to watch for symptoms until January 16, whilst people who were at the same hospital as the infected person must monitor for symptoms until January 21.

"Symptoms to watch out for include fever, sore eyes, runny nose and a cough, usually followed three or four days later by a red, blotchy rash that spreads from the head and face to the rest of the body," Dr Conrad Moreira said.

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"It can take up to 18 days for symptoms to appear after an exposure."

Australia is seeing an increase in measles cases, especially from travellers returning from overseas.

Moreira urged Australians to receive the measles-mumps-rubella (MMR) vaccine, which is free for children between 12-18 months old, and for anyone in New South Wales over the age of 65.

"The measles vaccine can prevent the disease even after exposure, if given early enough," he said.

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