Victoria faces potential Covid lockdown as other states close borders and warn against Melbourne travel

Acting premier says next 24 hours critical for determining whether tougher measures needed to contain Melbourne coronavirus outbreak

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Victorians are bracing for additional Covid-19 cases as other states closed their borders and warned residents to avoid traveling to Melbourne.

Victoria's acting premier, James Merlino, said on Wednesday that the next 24 hours would be critical after the state recorded six new local cases, taking the cluster to 15 in total.