From today's ABC COVID blog.
Analysis from Melbourne's Burnet Institute has found 95 per cent of people aged over 60 would need to be vaccinated against COVID-19 in order for Australia to open its borders safely.
The researchers found a 70 per cent vaccination rate for those under 60 would also be required to prevent severe outbreaks of the Delta variant.
The modelling has been provided to the Victorian government ahead of Premier Daniel Andrews’ attendance at National Cabinet later today.
Burnet Institute deputy director Margaret Hellard said even with the high vaccination rates, mask regulations and occasional lockdowns would still occur if the borders were opened.
"Restrictions will be required, even with high levels of vaccination," Professor Hellard said.
"We will occasionally need to bring in restrictions to control an outbreak, to stop people getting sick and dying from COVID."
National Cabinet is meeting today to discuss the vaccination levels required to do away with lockdowns.
The Doherty Institute has provided modelling on the percentage of the population that needs to be vaccinated before lockdowns are no longer needed.