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Rugby league fans and administrators are nervously awaiting confirmation of Queensland's COVID-19 case numbers so the NRL grand final in Brisbane can go ahead.

Fears of a postponement or relocation of Sunday's historic first decider at Suncorp Stadium were tempered after Queensland recorded two new locally acquired cases a day earlier.

But the official green light for the blockbuster clash between the Penrith Panthers and South Sydney Rabbitohs won't be officially granted until Sunday morning, pending the latest case numbers.

"A day is a long time with COVID-19 but things are looking really positive," Queensland Health Minister Yvette D'Ath said on Saturday.

"To know that we had five clusters happening, and the reality is we have not seen any community transmission beyond the actual workplace and household contacts, is great news.

Crowd numbers have already been cut from 52,000 to 39,000 and that could be dropped even further depending on the latest case numbers.

Queensland has dodged a lockdown so far this week after cases of community transmission was detected in the state on Tuesday.

The threat of lockdown sent the NRL into chaos ahead of Sunday's event, with backup plans varying from relocation to postponement if crowds were banned.

ARL Commission chairman Peter V'landys said it was "full steam ahead" but postponing the game and shifting it to Townsville remained an option if Brisbane was locked down at the last minute.

"We won't do that unilaterally, we'll certainly speak to the two coaches, the two clubs, and get their viewpoints and make a decision," V'landys told 2GB on Saturday.

"I'm hoping that doesn't occur and that there'll be no cases that they can't track and we're full steam ahead on Sunday night."

Fans will be able to get jabbed at pop-up vaccination clinics around Suncorp Stadium before the decider.

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