Vaccine Info

Fluzone Influenza Vaccines

Fluzone Quadrivalent, Flublok Intradermal Quadrivalent, and Fluzone High-Dose vaccines are given to help prevent influenza disease caused by influenza A and B strains contained in each vaccine.

For 2020-2021, the quadrivalent (four-component) egg-based vaccines, which protect against a second lineage of B viruses, are recommended to contain:

  • A/Guangdong-Maonan/SWL1536/2019 (H1N1)pdm09-like virus (updated)
  • A/Hong Kong/2671/2019 (H3N2)-like virus (updated)
  • B/Washington/02/2019 (B/Victoria lineage)-like virus (updated)
  • B/Phuket/3073/2013-like (Yamagata lineage) virus

Fluzone Vaccine Offerings

Fluzone Quadrivalent contains the 2 strains of influenza A and B identified for the current flu season. The vaccine is given to people 6 months of age and older.

Fluzone High-Dose is a vaccine given to people 65 years of age and older that contains 4 killed flu virus strains. 

  • Fluzone High-Dose contains four times the antigen (the part of the vaccine that helps your body build up protection against flu viruses) of standard-dose inactivated influenza vaccines.
  • The higher dose of antigen in the vaccine is intended to give older people a better immune response, and therefore, better protection against flu.

Sanofi's Flublok Quadrivalent is a recombinant influenza vaccine. 

For 2020-2021, cell- or recombinant-based vaccines are recommended to contain:

  • A/Hawaii/70/2019 (H1N1)pdm09-like virus (updated)
  • A/Hong Kong/45/2019 (H3N2)-like virus (updated)
  • B/Washington/02/2019 (B/Victoria lineage)-like virus (updated)
  • B/Phuket/3073/2013-like (Yamagata lineage) virus

Flublok Intradermal Quadrivalent is a vaccine given to people 18 through 64 years of age. It consists of the 4 influenza strains that have been identified for the current flu season.

  • Flublok is made without the use of eggs and therefore is not subject to the mutations that are sometimes introduced into the vaccine during the process of egg adaptation that can cause the traditional vaccines to be ineffective.
  • Fluzone Intradermal Quadrivalent is administered as an Intradermal vaccine which is injected into the skin through a small, ultra-thin needle. 
  • Since the skin has more specialized immune cells than the muscle, the intradermal vaccine can provide a similar level of protection as the traditional intramuscular flu shot.

Fluzone Vaccine Discounts

Vaccine discounts can be found here sponsored by GoodRx

Fluzone Vaccine Indications

Fluzone influenza vaccines are indicated to help prevent influenza disease caused by influenza A and B strains contained in the vaccine.

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Updated
08/08/2020 - 14:50