Health officials say a new COVID-19 variant has emerged in Melbourne that is highly transmissible. Melbourne recorded five new cases on Saturday with the city still under lockdown.
WHO naming convention, Delta and Kappa both refer to strains first detected in India. They are both sub-types of what was referred to as the Indian variant or B.1.617.
The Delta COVID-19 strain was first identified in a West Melbourne family who tested positive after travelling to regional New South Wales last month.
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