Fluarix Tetra (Quadrivalent Seasonal Inactivated Influenza Split Virion)

The Influenza vaccine, colloquially known as a flu shot, is a crucial preventive measure against influenza viruses.

1. What is a Flu Vaccine?
- Influenza (flu) vaccines protect against the four most common influenza viruses expected during the upcoming season.
- Most flu vaccines are administered as flu shots using a needle, typically in the arm. However, there is also a nasal spray flu vaccine available.

2. Types of Flu Vaccines:
- Trivalent Vaccines: These protect against three different flu viruses: an influenza A (H1N1) virus, an influenza A (H3N2) virus, and an influenza B/Victoria virus.
- Quadrivalent Vaccines: These protect against an additional influenza B/Yamagata virus.
- Age Recommendations: Everyone aged 6 months and older should receive a flu vaccine every year.
- High-Dose Vaccines: For people 65 years and older, preferentially recommended vaccines include Fluzone High-Dose Quadrivalent, Flublok Quadrivalent recombinant, and Fluad Quadrivalent adjuvanted flu vaccines.

3. Effectiveness:
- While effectiveness varies from year to year, flu vaccines provide modest to high protection against influenza.
- Getting vaccinated lowers your risk of getting the flu and its associated complications.

Remember, annual flu vaccination is essential for public health, especially for those at higher risk of severe complications. Consult with your healthcare provider to determine the best vaccine for you.