Genomic sequencing has revealed the West Melbourne family have the Delta variant, which is predominately found in India and isn't linked to Melbourne's wider outbreak of the Kappa strain.

The family travelled to parts of NSW, including Jervis Bay, before testing positive to the virus.

Victorian chief health officer Brett Sutton said the Delta strain was a variant of "significant concern".

"It is a concern that it is not linked to other cases, but we are chasing down all those primary case contacts for that family and looking into where it might have been acquired," Prof Sutton said.

Side note: In a bid to simplify the labelling of coronavirus strains and remove stigma from the names, the World Health Organisation is now using the Greek alphabet to name variants. Information about the changes is available on the WHO's website.

Melbourne-based artist Peter Wegner has taken out the Archibald Prize with a fitting portrait of centenarian and artist Guy Warren AM.

Mr Warren turned 100 in April and was born in the same year the Archibald Prize was first awarded in 1921.

Wegner, a six-time finalist in the esteemed award, said winning the prize was an "unbelievable moment in my life".

The work titled "Portrait of Guy Warren at 100".

Melbourne newspaper The Age has been fined $450,000 over its coverage of Cardinal George Pell's sexual abuse convictions.

It was the largest individual punishment among more than $1 million in fines dished out to media organisations by the Victorian Supreme Court on Friday.

News Life Media was fined $400,000 for a news.com.au online article.

Justice John Dixon said media companies "took it upon themselves" to decide between Pell's right to a fair trial and the public's right to know.

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