Although variable in efficacy from year to year, the influenza vaccination generally protects against influenza viruses that are common during the winter seasons and are highly contagious. Influenza causes respiratory infections which are generally limited in healthy individuals. High-risk individuals are strongly recommended to have routine flu vaccines.
Dosage & Instructions
The flu vaccine protects from illness and the spread of the virus. It should be administered annually as a single injection vaccine.
Immunization records are not mandatory, but useful.