Prime Minister Scott Morrison has issued further comments following his announcement that the federal government would be rolling out mandatory coronavirus vaccinations.

The Prime Minister says he is hopeful a successful vaccine is on its way; but that such a vaccine will not be made compulsory if and when it is ready.

The Australian Government has signed a letter of intent with UK drug group AstraZeneca in an attempt to secure a supply of a potential vaccine, and are looking to reach a formal agreement in the coming days.