Australians complacent about COVID-19 vaccination risk being locked out of key Christmas travel destinations including NSW, Victoria and Queensland if they do not book a jab within days, rollout boss John Frewen has warned.

As the country looks set to pass the 80 per cent double-vaccination milestone as soon as Friday, Lieutenant-General Frewen said the reopening of international travel for south-eastern states was helping address complacency in Western Australia and Queensland, but more work was needed to drive up the vaccination rate.