In 2024, more than 365,000 cases of flu were reported across Australia and more than 4,200 people were admitted to hospital.
This year, the United States has recorded its worst flu season since 2009 and hospitals in the UK have been swamped with flu cases.
In Australia, currently one in three telehealth calls to doctors relate to respiratory issues.
With the flu season starting earlier, doctors are concerned about the declining flu vaccination rate, especially among high-risk groups.
Last year, just 61 per cent of adults over 65 were protected against the flu, compared to 70 per cent in 2022.
Only a quarter of children under five were vaccinated for the flu last year, down from almost a third three years ago.
Bupa medical director, Dr Tony MacDermott has encouraged Australians to book a flu shot between April and May to be covered in time for the expected peak in June and July.
“We’re seeing an ongoing trend of vaccine complacency – and this is definitely not the year for it,” Dr MacDermott said.
“Getting the flu vaccine is one of the simplest and most effective things you can do to protect yourself, your family, and your community.”
Infants aged six months to five years, adults over 65 years, pregnant women, people with chronic health conditions, and the indigenous community are the most vulnerable groups.
The flu vaccine is available for free for these at-risk groups.