Australian Federal Health Minister Nicola Roxon said on Wednesday that the threat level to Australia from influenza A/H1N1 was not downgraded despite there being no confirmed cases of the disease in the country.

"We do have medical experts saying to us we still don't know how this global virus will develop over future weeks," Roxon told reporters in Melbourne.

According to Australian Associated Press, Roxon said she had been advised the appropriate status should remain at a delay phase, which means the government was trying to delay entry of the disease into Australia.

There has no confirmed cases of influenza A/H1N1 in Australia at this stage.

The government was hopeful the present status could be maintained, Roxon said.