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Guilherme Mazui

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What is the Difference Between Trivalent and Quadrivalent Flu Vaccine?

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The main difference between trivalent and quadrivalent flu vaccines lies in the number of strains of the flu virus they protect against.

  • Trivalent flu vaccine: This vaccine protects against three strains of the flu, including two strains of influenza A (H1N1 and H3N2) and one strain of influenza B.
  • Quadrivalent flu vaccine: This vaccine protects against four strains of the flu, including two strains of influenza A (H1N1 and H3N2) and two strains of influenza B.

Both trivalent and quadrivalent flu vaccines are effective in providing protection against the flu, and the CDC does not currently recommend one over the other. However, the quadrivalent vaccine offers broader protection by covering both B-strains of the influenza virus. In seasons with relatively high influenza B activity, quadrivalent vaccines have been found to be more protective than trivalent vaccines.

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  • What is the Difference Between Trivalent and Quadrivalent Flu Vaccine?
  • Comparative Table: Trivalent vs Quadrivalent Flu Vaccine

    • Comparative Table: Trivalent vs Quadrivalent Flu Vaccine

    The main difference between trivalent and quadrivalent flu vaccines lies in the number of virus strains they protect against. Here is a comparison table highlighting the differences:

    Feature Trivalent Flu Vaccine Quadrivalent Flu Vaccine
    Number of Strain
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    Guilherme Mazui

    Guilherme Mazui is graduated in journalism from the Federal University of Minas Gerais (UFMG) and a master's degree in Communication from the University of São Paulo (USP). In addition, he has experience in advertising writing and has worked as a content editor in several companies.