Flu: What is the newest strain?
'Aussie flu' is the popular name given to the dominant strains of the virus which caused most illness in the Southern Hemisphere during its winter.
The main strain circulating was the A(H3N2) virus and Australian health authorities were caught by surprise when the season started much earlier than usual.
The very young and elderly people were affected most and the median age of people who died from the illness was 86 years.
Other forms of flu were also circulating, including A(H1N1) - known as swine flu - as well as the B strain.
The flu vaccine should give a good degree of protection against these strains this winter but the virus can also mutate, making the impact unpredictable.