2024-2025 Influenza Vaccine Composition (Click the WHO link for more info)

It is recommended that all 2024-2025 U.S. flu vaccines be three-component (trivalent) vaccines and include an influenza A(H1N1), an A(H3N2) and a B/Victoria-lineage vaccine virus. Influenza B/Yamagata viruses are no need to be included. (Click the CDC link for more info).

The egg based trivalent vaccines for use in the 2024-2025 northern hemisphere influenze season contain the following:

Cell- or recombinant-based quadrivalent vaccines for use in the 2024-2025:

2023-2024 Influenza Vaccine Composition

It is recommended that egg based quadrivalent vaccines for use in the 2023-2024 northern hemisphere influenza season contain the following:

Cell- or recombinant-based quadrivalent vaccines for use in the 2023-2024:


2022-2023 Influenza Vaccine Composition

It is recommended that egg based quadrivalent vaccines for use in the 2022-2023 northern hemisphere influenza season contain the following:

Cell- or recombinant-based quadrivalent vaccines for use in the 2022-2023:



2021-2022 Influenza Vaccine Composition

It is recommended that egg based quadrivalent vaccines for use in the 2021-2022 northern hemisphere influenza season contain the following:

Cell- or recombinant-based quadrivalent vaccines for use in the 2021-2022:

2020-2021 Influenza Vaccine Composition

It is recommended that egg based quadrivalent vaccines for use in the 2020-2021 northern hemisphere influenza season contain the following:

Cell- or recombinant-based quadrivalent vaccines for use in the 2020-2021:



2019-2020 Influenza Vaccine Composition

It is recommended that egg based quadrivalent vaccines for use in the 2019-2020 northern hemisphere influenza season contain the following:

It is recommended that the influenza B virus component of trivalent vaccines for use in the 2019-2020 northern hemisphere influenza season be a B/Colorado/06/2017-like virus of the B/Victoria/2/87-lineage.



2018-2019 Influenza Vaccine Composition

It is recommended by WHO that quadrivalent vaccines for use in the 2018-2019 northern hemisphere influenza season contain the following:

It is recommended that the influenza B virus component of trivalent vaccines for use in the 2018-2019 northern hemisphere influenza season be a B/Colorado/06/2017-like virus of the B/Victoria/2/87-lineage.

2017-2018 Influenza Vaccine Composition

All 2017-18 influenza vaccines licensed in the United States will contain hemagglutinin (HA) derived from influenza viruses antigenically similar to those recommended by FDA.

2017–18 trivalent vaccines:

2017–18 quadrivalent vaccines:

      • the same three HA antigens as trivalent vaccines, plus
      • B/Phuket/3073/2013-like virus (Yamagata lineage)

2016-2017 Influenza Vaccine Composition

It is recommended that trivalent vaccines for use in the 2016-2017 influenza season (northern hemisphere winter) contain the following:

It is recommended that quadrivalent vaccines containing two influenza B viruses contain the above three viruses and a B/Phuket/3073/2013-like virus.

2015-2016 Influenza Vaccine Composition

It is recommended that trivalent vaccines for use in the 2015-2016 influenza season (northern hemisphere winter) contain the following:

It is recommended that quadrivalent vaccines containing two influenza B viruses contain the above three viruses and a B/Brisbane/60/2008-like virus.

2014-2015 Influenza Vaccine Composition

The vaccine viruses recommended by WHO for the 2014-15 northern hemisphere influenza season are the same as those for the northern hemisphere 2013-14 influenza season and 2014 southern hemisphere season. 

The WHO Vaccine Composition Meeting for the 2014-2015 season was held February 17 -19, 2014 at WHO headquarters in Geneva, Switzerland. On February 20, the Meeting recommended that trivalent vaccines for use in the Northern Hemisphere 2014-15 influenza season contain the following:

The Meeting also recommended that Quadri-valent Vaccines containing two influenza B viruses contain the above three viruses and a B/Brisbane/60/2008-like virus.

2013-2014 Influenza Vaccine Composition

It is recommended that trivalent vaccines for use in the 2013-2014 northern hemisphere influenza season contain the following:

2012-2013 Influenza Vaccine Composition

It is recommended that trivalent vaccines for use in the 2012-2013 northern hemisphere influenza season contain the following:


Source:
FDA's Influenza Virus Vaccine Composition and Lot Release Info;
2023-2024 CDC Flu Vaccination Recommendations Adopted

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