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Quadrivalent inactivated influenza vaccine
Used for
- Prevention of seasonal influenza caused by vaccine-matched influenza viruses.
Usual adult dose
One dose each influenza season, given by intramuscular injection; some age groups may receive it subcutaneously.
Usual dose in children
Children aged 6 months and older: one dose each season; first-time vaccine recipients under 9 may need two doses, four weeks apart.
Common side effects
- Injection-site pain, redness, or swelling
- Headache, muscle aches, or tiredness
- Fever or chills
- Uncommon allergic reactions
Important warnings
- Do not use after a severe allergic reaction to a previous influenza vaccine or vaccine ingredient.
- Vaccination may be delayed during a significant acute illness with fever.
- People with bleeding disorders or low platelets may bruise or bleed after injection.
- Protection is not immediate and may not prevent every influenza infection.
Pregnancy
Inactivated influenza vaccine may be given during any trimester; vaccination is recommended during pregnancy.
Breastfeeding
Compatible with breastfeeding.
Interactions
- Other vaccines can generally be given at the same visit at separate injection sites.
- Immunosuppressive treatment may reduce the immune response.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.