Influvac® is an inactivated trivalent vaccine launched in 1962.


Influvac® contains the appropriate quantities of A and B virus strains recommended by the World Health Organization. These strains vary from year to year and therefore vaccines from previous years may not contain the current recommended virus strains.

The constituents of Influvac® for the 2018/2019 season, as recommended by the World Health Organization, are as follows:

  • Active constituents

    Influenza virus surface antigens (haemagglutinin and neuraminidase) of the following strains (propagated in fertilised hens’ eggs from healthy chicken flocks) per 0.5 ml dose:

    • A/Michigan/45/2015 (H1N1)pdm09-like strain (A/Singapore/GP1908/2015, IVR-180) – 15 micrograms haemagglutinin
    • A/Singapore/INFIMH-16-0019/2016 (H3N2)-like strain (A/Singapore/INFIMH-16-0019/2016, NIB-104) – 15 micrograms haemagglutinin
    • B/Colorado/06/2017-like strain (B/Victoria/2/87 lineage) (B/Maryland/15/2016, NYMC BX-69A) – 15 micrograms haemagglutinin
  • Other constituents

    • Potassium dihydrogen phosphate
    • Disodium phosphate dihydrate
    • Sodium chloride
    • Potassium chloride
    • Calcium chloride dihydrate
    • Magnesium chloride hexahydrate
    • Water for injections
    • Residue or traces of:
      • Formaldehyde
      • Cetyltrimethylammonium bromide
      • Ovalbumin
      • Chicken proteins
      • Polysorbate 80
      • Gentamicin


  • Allergy to eggs or chicken protein
  • Patients hypersensitive (allergic) to eggs or chicken protein should not be vaccinated with Influvac®.
  • Allergy to gentamicin or any other constituent of the vaccine. As Influvac® may contain minimal amounts of gentamicin, they should not be used in patients hypersensitive to this antibiotic.
  • Patients who are allergic to any of the ingredients or to any of the components that could be present in trace amounts, should not receive Influvac® Please also see Constituents.
  • Vaccination should be postponed in patients with febrile illness or acute infection.


Packaging solutions to meet storage demands means that Influvac® is conveniently packaged in slim, ten-tray blister-free packs with tamper proof seals.

Siliconised needle designed
for injection comfort

The 0.25ml dose for children
<36 months of age is clearly marked

16mm needle length

Pre-filled to deliver the
exact 0.5ml dose

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