The Australian and international news stories you need to know today, Tuesday May 25. Mamamia 2 hrs ago Gemma Bath "Ready ourselves." Hopes genomics can link Vic COVID outbreak. Victorian health authorities hope genomic sequencing will establish the source of four new COVID-19 cases among a family in Melbourne's north. The family cluster - involving a man in his 30s, a man in 70s, a woman in 70s and a pre-school aged child from three households in the Whittlesea area - emerged on Monday. Health Minister Martin Foley said there was no indication the infections were linked to exposure sites visited by a Victorian man who contracted coronavirus in South Australian hotel quarantine.