Recent research has revealed that flu viruses can evolve quickly and in unexpected ways. This means that the strains of influenza that circulate each year can differ significantly from one another, making the development of a single vaccine that can protect against all flu strains a difficult task. However, scientists have now identified a way to predict how flu strains may evolve in the future, which could help to create a vaccine that would offer protection against multiple strains of influenza. By analyzing the genetic material of flu viruses, researchers were able to identify a set of mutations that are likely to occur in the future. This could help scientists create a vaccine that would offer protection against a wide range of flu strains, reducing the need for annual vaccinations.

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source: Phys.org