Each year the flu vaccine is reformulated to target the current strains of influenza A and B that are circulating globally — but what if it didn't need to be?

Melbourne researchers have identified consistent fragments from influenza B that could tell your immune system how to recognise all varieties of that virus.

Professor Katherine Kedzierska, from the Doherty Institute says, while their research is exciting, the current annual vaccination is the best defence against both influenza A and B.