Australia is facing a renewed surge in influenza cases this winter, following the worst flu season on record in 2025. Health authorities are urging the public to get vaccinated as a mutated strain known as 'Super K' continues to spread.
The 2025 season saw more than 500,000 confirmed infections, driven largely by the H3N2 subclade K variant. While not more severe than other strains, its high infectiousness led to thousands of cases even during the summer months.
Fortunately, an adjusted influenza vaccine is now available that offers better protection against this variant. Doctors recommend vaccination ahead of the peak winter season to reduce the risk of severe illness and hospitalisation.
Other respiratory viruses are also circulating at comparatively low levels so far this year, but flu remains the primary concern. Officials encourage everyone eligible to book their jab promptly.
