SYNFLORIX®

05/22/2024
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Product Information

  • Name: SYNFLORIX®
  • Type: Pneumococcal conjugate vaccine (Non-Typeable Haemophilus influenzae (NTHi) protein D, diphtheria, or tetanus toxoid conjugates) adsorbed
  • Form: Suspension for injection
  • Manufacturer: GlaxoSmithKline Inc.

Indications and Clinical Use

  • Indication: Active immunization of infants and children from 6 weeks up to 5 years of age against:
    • Invasive diseases caused by Streptococcus pneumoniae serotypes 1, 4, 5, 6B, 7F, 9V, 14, 18C, 19F, 23F, and cross-reactive 19A.
    • Pneumonia.
    • Acute otitis media (AOM).

Contraindications

  • Known hypersensitivity to any component of the vaccine.

Warnings and Precautions

  • General: Postpone vaccination in subjects with acute severe febrile illness. Minor infections, like colds, should not result in deferral.
  • Administration: Should not be administered intravascularly or intradermally. No data on subcutaneous administration.
  • Immunocompromised Individuals: May have reduced antibody response.
  • Prophylactic Antipyretics: May reduce immune response to the vaccine.

Adverse Reactions

  • Very Common: Appetite loss, drowsiness, pain, redness, swelling at injection site, fever ≥38°C, irritability.
  • Common: Injection site reactions like induration, fever >39°C.
  • Uncommon: Diarrhea, vomiting, nausea, headache, abnormal crying, rash, apnoea in very premature infants.
  • Rare: Febrile and non-febrile convulsions, allergic reactions, urticaria.
  • Very Rare: Anaphylaxis, Kawasaki disease.

Drug Interactions

  • Can be given concomitantly with various other vaccines (e.g., DTPa-HBV-IPV/Hib, MMR, varicella vaccine).
  • Prophylactic administration of antipyretics (e.g., acetaminophen) may reduce the immune response.

Dosage and Administration

  • Primary Immunization:
    • Infants (6 weeks to 6 months): Three-dose primary series (2, 4, 6 months) with a booster dose at 12-15 months.
    • Two-dose primary series: For routine infant immunization, a series of three doses may be given (2, 4, and 11-12 months).
  • Catch-up Schedule:
    • 7-11 months: 2 doses at least 1 month apart, with a third dose after 1 year of age.
    • 12 months to 5 years: 2 doses at least 2 months apart.
    • Premature Infants: Three-dose primary series with a booster dose at least 6 months after the last primary dose.

Storage and Stability

  • Store in a refrigerator (2°C to 8°C). Do not freeze. Protect from light.
  • Can be stored outside the refrigerator for up to 72 hours at temperatures between 8°C and 25°C.

Clinical Trials and Efficacy

  • Demonstrated effectiveness in preventing IPD, pneumonia, and AOM in children.
  • Studies in high-risk populations (e.g., HIV-positive, sickle cell disease) show consistent safety and reactogenicity profiles compared to healthy children.
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Written By Paul Kim

Medical Director - APN, NSWOC, RNP

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