Question

Suggest why the influenza vaccine needs to be redeveloped and people need to be revaccinated each year.

Accepted Answer

Influenza vaccine:The virus causing flu mutates regularly so its antigens on surface change tooThis means that vaccines must be redeveloped as people will no longer be able to form secondary response against the mutated variant

Front	Suggest why the influenza vaccine needs to be redeveloped and people need to be revaccinated each year.
Back	Influenza vaccine: The virus causing flu mutates regularly so its antigens on surface change too This means that vaccines must be redeveloped as people will no longer be able to form secondary response against the mutated variant

Influenza Redeveloped People Suggest Vaccine Revaccinated Year Virus