Stanford University

Vaccine Information

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Seasonal Flu Vaccine Information

This year’s quadrivalent influenza vaccine has been standardized according to U.S. Public Health Service Requirements and includes the following strains:

  • an H1N1 pdm09-like virus: A/Guangdong-Maonan/SWL1536/2019 (H1N1) [Fluarix] or A/Hawaii/70/2019 [Flucelvax: A/Nebraska/14/2019]
  • an H3N2-like virus: A/HongKong/2671/2019 [Fluarix] or A/HongKong/45/2019 [Flucelvax: A/Delaware/39/2019]
  • a B Victoria lineage: B/Washington/02/2019 [Fluarix]; B/Darwin/7/2019 [Flucelvax]
  • a B Yamagata lineage: B/Phuket/3073/2013 [Fluarix]; B/Singapore/INFTT-16-0610/2016 [Flucelvax]

This year’s high-dose quadrivalent influenza vaccine, approved for use in persons 65 years of age and older, has been standardized according to U.S. Public Health Service Requirements and includes the following strains:

  • an H1N1 pdm09-like virus: A/Victoria/2454/2019
  • an H3N2-like virus: A/Hong Kong/2671/2019
  • a B Victoria lineage: B/Victoria/705/2018 BVR-11
  • a B Yamagata lineage: B/Phuket/3073/2013

Stanford University Occupational Health Center

Flucelvax Quadrivalent vaccine, single-dose vials, Seqirus

  • Contains NO preservatives (ie thimerosol) and NO latex
  • Prepared from cell culture rather than embryonated chicken eggs
  • NO antibiotics are used in manufacturing process
  • Pregnancy Category B

Fluarix Quadrivalent vaccine, single-dose vials, GlaxoSmithKline

  • Contains NO preservatives (i.e. thimerosol) and NO latex
  • Prepared from virus propagated in embryonated chicken eggs
  • Residual gentamicin, hydrocortisone, ovalbumin, and formaldehyde may be present in trace amounts from the manufacturing process
  • Pregnancy Category B

Fluad High-Dose Quadrivalent vaccine, single-dose vials, Seqirus

  • Approved for use in persons 65 years of age and older
  • Contains NO preservatives (ie thimerosol) and NO latex
  • Prepared from virus propagated in embryonated chicken eggs
  • Residual neomycin, hydrocortisone, residual egg protein (ovalbumin), and formaldehyde may be present in trace amounts from the manufacturing process
  • Contains MF59C.1 adjuvant, a squalene based oil-in-water emulsion

Vaden Health Center

Fluarix Quadrivalent vaccine, single-dose vials, GlaxoSmithKline

  • Contains NO preservatives (i.e. thimerosol) and NO latex
  • Prepared from virus propagated in embryonated chicken eggs
  • Residual gentamicin, hydrocortisone, ovalbumin, and formaldehyde may be present in trace amounts from the manufacturing process
  • Pregnancy Category B

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