Australia's chief medical officer Jim Bishop said on Friday the rollout of a national A/H1N1 flu vaccine would be ready to proceed by October.

Clinical trials into the flu vaccine have finished but the results are still being analyzed.

"Early preliminary results have given us some comfort," Bishop told Australian Associated Press.

Australian Medical Association President Andrew Pesce said indemnity issues would delay the rollout of a national A/H1N1 flu vaccine.

However, Bishop said indemnity issues were unlikely to hinder the availability of the A/H1N1 flu vaccine.

"We don't expect this to be an obstacle to the rollout of this program," he said, adding a major medical insurer had said they were "quite happy" to indemnify doctors.

Bishop said discussions with doctors, insurers and general practitioners groups had gone "extremely well".

There are currently 86 people in intensive care nationwide as a result of A/H1N1 flu, with 420 patients being treated in hospitals.