Victoria Covid cases: genomic sequencing under way after four people in Melbourne test positive

Two men, a woman and a child from the same family spread across two households have tested positive in the Whittlesea area

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Four people in Melbourne's northern suburbs have tested positive to Covid-19 and anyone who attended a busy shopping centre has been told to isolate for 14 days, as health authorities plead with Victorians to get vaccinated as soon as possible.

Victorian health authorities hope genomic sequencing will establish the source of the four new cases. South Australia and New South Wales have already imposed new travel restrictions on people with exposure to key sites in Melbourne.