Victoria records two new Covid cases as official says Delta variant likely leaked from hotel quarantine

Highly contagious new variant probably came through an importation from overseas via hotel quarantine, infectious diseases expert says

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Victoria has recorded two new local Covid-19 cases as authorities scramble to find the source of the state's Delta strain cluster.

A senior public health official says her strong hypothesis" is that the highly contagious Delta variant of the coronavirus that caused a second outbreak in Melbourne was caused by a hotel quarantine leak.