KARL STEFANOVIC:Well contact tracing is emerging as one of the big hurdles facing authorities in Victoria and New South Wales.ALLISON LANGDON:There've now been more than 900 cases of coronavirus in Victoria with no identified source.
Health officials in New South Wales are concerned about three mystery cases from a cluster in Sydney's south-west. For the latest, we are joined by acting Chief Medical Officer Professor Paul Kelly from Canberra.
A very good morning to you, Professor.PAUL KELLY:Morning.ALLISON LANGDON:When the Victorian numbers are so high, is New South Wales overreacting to three mystery cases?PAUL KELLY:Look, real shout out to the contact tracers in New South Wales.