Vaccination is a safe and effective way to protect against serious disease caused by influenza, and the flu vaccine is recommended for everyone aged 6 months and over. Flu vaccine can be given anytime.
INFLUENZA ALERT
12th December 2025
Influenza activity has increased across NSW since October 2025, driven by influenza A (H3N2) subclade K.
Emergency department presentations for influenza-like illness are well above usual levels.
Highest notification rates are in children aged 2–16 years.
The 2025 influenza vaccine is safe and effective in reducing disease severity and hospitalisation.
Influenza and guidance in the holiday period can be found here.
Continue to encourage a 2025 influenza vaccination particularly for:
INFLUENZA ANTIVIRAL TREATMENT /POST EXPOSURE PROPHYLAXIS
You can find the NSW public health advice on influenza antiviral treatment here.
2025 NIP influenza program resources
ATAGI statement, NIP program advice, NSW Health website, and the Department website.
For clinical advice, refer to the Australian Immunisation Handbook Influenza (flu) chapter.
