South Australian health authorities have been forced to issue early flu vaccinations in the wake of a sudden wave of influenza cases in the region.
There have been more than 26,000 diagnoses of the flu in South Australia in 2019, compared to only 7,000 each in Queensland and New South Wales.
90,000 South Australian school children will have access to the free vaccine through the state program, and distribution has already begun for people over the age of 65.