Yes. The Australian Immunisation Handbook recommends a flu shot every year for everyone aged 6 months and over.
- Flu viruses change, so the vaccine is reviewed every year. Last year's shot may not match this year's strains, and its protection fades.
- Protection can begin to wane after 3 to 4 months.
- Most adults need one dose a year.
Cost? See Can I get a free flu shot?
Still stuck? Email flu@corporatecare.com.au.
Sources: Australian Immunisation Handbook, last updated 30/09/2026: reviewed every year, wane after 3 to 4 months, one dose a year.