Transmission of the A/H1N1 virus has been elevated in New Zealand for several weeks, the Influenza Specialist Group (ISG) reported, and a jump in new infections was also now emerging in Australia.

"The timing of the flu season can vary somewhat each year," Influenza Specialist Group (ISG) chairman Dr Alan Hampson told Australian Associated Press on August 26.

"Current data now show that infections are on the increase in Australia and influenza is now at significant levels in New Zealand, which usually shortly precedes Australia”, said Mr. Hampson.

The latest Flutracking data for New South Wales, issued earlier this month, points to "influenza-like illness" infections among the state's un-vaccinated population rising to above four percent.

A Department of Health and Aging Influenza Surveillance Report for the week ending August 13 also notes a jump in laboratory confirmed influenza cases in state of Victoria, South Australia and Queensland.

There have also been four pandemic influenza related deaths in 2010 reported to the National Notifiable Diseases Surveillance System.

Mr. Hampson said vaccination remained the best protection against the virus which was known to pose added risks to pregnant women and younger Australians as well as Aboriginal or Torres Strait Islander people - and particularly those with chronic medical conditions.