*UPDATE* Quadrivalent Vaccine NOW AVAILABLE
Each year the World Health Organization (WHO) puts forward its recommendations for the composition of the influenza virus for the Southern Hemisphere influenza season. This year this includes two influenza A strains and one influenza B strain.
Over the past 10 years, these three recommended strains have accounted for an average of 94% of all influenza cases reported in Australia.
For the 2016 flu season, some manufacturers have chosen to include a fourth strain – an additional influenza B strain.