A COVID-positive Victorian family which travelled to parts of southern New South Wales (NSW) has a different coronavirus variant to other people associated with the current Greater Melbourne outbreak, Victorian authorities say. NSW on Thursday extended by a week the stay-at-home order for people who have arrived from Victoria after the southern state lengthened its lockdown. Anyone in NSW who has been in Victoria since 4 p.m. on Thursday, May 27 will now be required to stay at home until at least June 10. Victorian health authorities on Friday said a Melbourne family of four which visited south NSW locations including Gundagai, Goulburn, Jervis Bay, Huskisson and Vincentia had a different COVID-19 strain to other cases. The couple and their two children have the “Delta” strain of the virus, first found in India, rather than the “Kappa” strain, also first found in India. The “Kappa” strain has been the dominant …