The Delta Variant originated in India is definitely very terrible and much more highly contagious than the UK Variant. Nevertheless, an Epidemiologist has opined that the spread will also depend on the infected person who spread it. The flight crews driver is himself also a super-spreader and so spreading it easily via his airspace ie high airborne efficiency in Westfield but others infected by him don’t seem to have spread the same Delta Variant so efficiently. The same seems to be holding true in the Melbourne outbreak for this Delta Variant. This maybe the only comfort we can have now in monitoring the current outbreak in Sydney.