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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:


2013-2014 Influenza Vaccine Composition

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


For WHO recommendations on the composition of influenza virus vaccines in the previous years, please click here.