Vaccination - Frequently Asked Questions on Seasonal Influenza Vaccination Download PDF (0.28 mb, PDF) Taking your flu shot, also known as the influenza vaccine is a safe and effective way to protect you from the seasonal flu. It is important to to get your shot every year, unless you have life-threatening allergy to the ingredients in the vaccine. Read on for a list of Frequently Asked Questions (FAQ) about the influenza virus. [Please download the PDF file if you are unable to view the image below.]