The Doherty Institute modelling says COVID zero isn't realistic, some states still insist that goal is achievable.
Some state and territory leaders are questioning whether the nation can reopen when it hits 70 to 80 per cent vaccine coverage of eligible adults, especially while COVID cases are high.
This discord has forced the Doherty Institute to reaffirm its own plan, insisting when those thresholds are reached restrictions can ease, regardless of the number of cases.