Sydney, Australia -- Sydney's fast-growing coronavirus outbreak has become a "national emergency," state leaders said Friday, as Australia's largest city reported another record number of new infections.

Admitting a month-long lockdown had so far failed to stop a Delta-variant outbreak, the state of New South Wales pleaded for Canberra to urgently send more vaccines and resources.

Declaring the outbreak a national emergency could pave the way for more federal government involvement in stemming the crisis.

"We have an obligation on behalf of the nation to contain the virus," said New South Wales premier Gladys Berejiklian. "There is no doubt that the numbers are not going in the right direction."

Her state on Friday reported 136 new cases, a record for this outbreak, which now totals 1,782.

With the virus "spreading everywhere" and half the country's 25 million people currently in lockdown, Berejiklian said the government must "refocus" its glacial vaccine rollout.

Just 12 percent of Australians have been fully vaccinated, thanks to problems with supplies of Pfizer jabs and skepticism about the safety of the AstraZeneca vaccine.

"We need, at least, more first doses of Pfizer," Berejiklian said, while warning Sydney's five million residents that restrictions could run until October.

She also announced non-essential workers in specific areas of Sydney would now be barred from leaving, tightening a lockdown that is almost certain to be formally extended next week.

"It is fairly apparent that we will not be close to zero (cases) next Friday," Berejiklian said. "We will have a clearer view next week on what August, September, and October look like."

Prime Minister Scott Morrison on Thursday apologized for the country's slow vaccine rollout, admitting targets had not been met.

"I take responsibility for the vaccination program. I also take responsibility for the challenges we've had," he said. "Obviously, some things are within our control, some things that are not."