These doses are all from the Pfizer plant In Belgium, where all of Australia's other doses have come from, and are largely targeted at 20 to 39 year olds in NSW.

"A key factor in being able to secure these doses from our Polish friends has been we have had a significant outbreak in our largest city," Prime Minister Scott Morrison told reporters in Canberra on Sunday.

These doses are approved by the Therapeutic Goods Administration.

Mr Morrison said 530,000 of these doses will be prioritised for express delivery to the 12 NSW local government areas where the COVID-19 outbreak continues to grow.

"This allocation of the doses is based directly on the advice I have received from the chief medical officer Professor (Paul) Kelly," he said.

In a statement from the Polish embassy in Canberra it said it was reselling these doses on a non-profit basis.

It said Poland has recently offered to share vaccines mainly with low and middle-income countries, including its Eastern neighbours and Balkan countries.

"The decision to also add Australia to the list was taken against the backdrop of the current outbreak of Delta variant in the country, following the talks between both countries' officials, including the Prime Ministers and Foreign Ministers," it said.

Australian Associated Press