Melburnians who visited Southbank, caught the Skybus or travelled through Melbourne Airport earlier this month, have been warned to stay alert for signs of measles after a young traveller was diagnosed with the disease.

The man in his 20s had recently returned from overseas, and spent the week working at a Southbank address before boarding a flight from Melbourne Airport to Perth.

The man travelled on a Virgin flight from Melbourne to Perth. Credit:Patrick Scala

The man has been isolated and is recovering at a private residence in Perth.

The Health Department has urged anyone who visited Southbank from February 4 to 7, or caught Virgin Australia Flight VA691 to Perth on February 7, to be on alert for symptoms including fever, severe coughing, conjunctivitis and rashes.