This is a quadrivalent flu vaccine that contains an adjuvant.


For a more detailed explanation of some of the ingredients, see this article: https://www.wired.com/2014/11/whats-inside-flu-shot/


Active ingredients:

Inactive influenza virus from 4 serotypes:

  • H1N1

  • H3N2

  • Victoria lineage

  • Yamagata lineage

Inactive ingredients:

Adjuvants: strengthen the immune response to the vaccine.

The adjuvant in this vaccine is called MF59C.1 and contains the following ingredients:

Antibiotics: used to prevent contamination during manufacturing


Relevant Terms

  • Adjuvant: a compound added to some vaccines to strengthen the immune response

  • Antibiotics: substances that kill bacteria or prevent them from dividing. Antibiotics are used in some vaccines to prevent contamination during the manufacturing process.

  • Emulsifier: a substance that helps to keep the ingredients mixed together

  • Quadrivalent: protects against four different serotypes of the pathogen (in this case, influenza virus)

  • Serotype: a group of strains within a species that share a particular type of surface structure