According to the latest WHO information, influenza epidemics can lead to a large number of cases each year, mostly mild, with about 5-10% of adults and 20-30% of children suffering from influenza each year worldwide, resulting in 3-5 million severe cases and 290,000-650,000 deaths. This shows that, especially for children, influenza is still a major threat to their health. Coupled with the fact that children have little sense of self-protection, it is a social responsibility and a child's right to be well protected by getting them vaccinated against influenza. With the vaccination, children's bodies will produce antibodies to the flu virus and will be well placed to fight themselves in the event of a seasonal flu outbreak. This is like preemptively lifting the virus, making the flu virus much less of a threat to children and thus defeating the virus.