Raiders five-eighth Terry Campese has been cleared of swine flu and will play against Cronulla on Sunday, but tomorrow's clash between Brisbane and the Bulldogs is in doubt, as the NRL continued to feel the effects of the H1N1 virus yesterday.

Star Broncos fullback Karmichael Hunt is expected to know if he has swine flu by this afternoon, after continuing to show symptoms of the virus yesterday.

The Hunt scare prompted the Broncos to cancel training, with chief executive Bruno Cullen fearing tomorrow's Suncorp Stadium clash could be in doubt.

The Broncos have placed their NRL and Toyota Cup squads in quarantine, as they await tests that will show whether Hunt and Brisbane's five other Origin stars Justin Hodges, Israel Folau, Peter Wallace, Darren Lockyer and Sam Thaiday have the virus.

If any of them test positive, the Broncos' entire squad could be in quarantine for a further three days, placing tomorrow's game in jeopardy. ''We don't want to panic processes in motion, but we're a bit concerned at the moment about the game on Friday night,'' Cullen said.

''We're waiting on a further test from Karmichael to confirm or otherwise if he's got swine flu or not.

''If he has, our entire squad, that's the first grade and under-20 squads, will be put into 72-hour isolation and commence treatment with Tamiflu.

''We've got the boys at home now, we're not training this morning, we've got them on Tamiflu.

''If Karmichael doesn't come through with it then we can get back to normal, but if he does that means the boys are out of action for three days from today.''

In other Swine Flu developments:

Doctors yesterday cleared Campese to play against the Sharks.

More league news in today's Canberra Times