By 30 June, 247 cases had been notified in WA (Figure 3 ). Of these 16 (6%) were travellers from overseas countries with documented transmission, 94 (38%) were travellers from Victoria or locally acquired cases linked to Victorian-origin cases, 29 (12%) were associated with travel from other Australian jurisdictions, 106 (43%) were locally acquired with no travel history and no identifiable links to imported cases and two (0.8%) were lost to follow up. Amongst the 94 clearly documented Victorianassociated cases, there were 72 individual importations over this period, demonstrating repeated seeding of WA by persons infected in Victoria.