Mr Morrison said it meant the federal government was now “hitting its marks”.
“I know we've had challenges over the course of the last four months but we're hitting those marks now,” he told Nine’s Today show on Friday.
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“We keep this pace up, we get there. So it really is a national effort to get there.”
He said it would be up to Pfizer to guarantee supply and there were still strains in the global market.
“I can tell you every time Pfizer said they are going to deliver something, they have.”
Meanwhile, Australians under lockdown in NSW have been urged to get their second AstraZeneca dose within eight weeks of their first jab.