A 37-year-old man from the south, and his two year old daughter are now in home isolation and test results for two women in the north-west and one woman in the north are expected later today.

The Pacific Dawn is at the centre of a H1N1 outbreak in Sydney with a 21-year-old man and 43-year-old woman testing positive for the virus, believed to have been picked while onboard the cruise ship - both are now in home quarantine and are taking anti-viral medication.

Ms Gallagher says health officials are trying to track down any people who have had contact with the infected Canberrans over the last few days but adds that to date all the cases seen have been mild.

Ms Gallagher says we are currently in the contained phase of the pandemic plan which is about trying to restrict the spread of the virus, but some experts believe it is highly likely the virus will become an epidemic.

The Federal Government has launched an ad campaign to advise people on what to do if they have symptoms - meanwhile the New South Wales Government says it is treating any cruise ships as if they are carrying the virus.