This medication belongs to a group of medications known as vaccines.
It is used to prevent influenza (the flu).
Influenza is a common viral illness caused by 2 types of virus: influenza A
and influenza B.
It usually takes 2 to 3 weeks for the protection against these viruses to be effective, and the protection lasts for 6 to 12 months. Annual vaccination is necessary to make sure you are covered for the new virus strains that are expected each year.The vaccine increases a person's defenses against the influenza virus.
It works by introducing very small amounts of viral components (parts) into the body. These components are enough to stimulate the production of antibodies (cells designed to attack that particular virus), which will remain in the body ready to attack that same virus in the future. The vaccine is used to prevent influenza for people over 6 months of age who want to reduce their chances of getting the flu.