Which flu shot should I choose? And what are cell-based and 'adjuvanted' vaccines?
With Australians learning to live with COVID and resuming international travel, cases of influenza are steadily rising. Unlike in previous years, all eight flu vaccines available this year are "quadrivalent", meaning each vaccine protects against four strains of flu viruses. The "adjuvanted" vaccine activates a stronger immune response and is therefore more effective at preventing the flu in older age groups than the standard vaccines. High-dose vaccines deliver a higher dose than standard flu vaccines and are also more effective than the standard vaccines at reducing transmission and preventing severe disease in older age groups. Once you receive the vaccine, your body starts to recognise the four strains of flu viruses and starts to develop an immune response over the course of about two weeks.
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