Product image of Influvac Tetra (B/Phuket/3073/2013-Like Virus (B/Phuket/3073/2013, Wild Type), Influenza Virus B/Austria/1359417/202) supplied by GNH India

Influvac Tetra

Active Ingredient:
B/Phuket/3073/2013-Like Virus (B/Phuket/3073/2013, Wild Type), Influenza Virus B/Austria/1359417/202
Origin:
EU

Influvac Tetra (B/Phuket/3073/2013-Like Virus (B/Phuket/3073/2013, Wild Type), Influenza Virus B/Austria/1359417/202)

Influenza virus vaccine, quadrivalent, the active ingredient in Influvac Tetra, is a vaccine presented as an injectable solution for intramuscular or subcutaneous use. It induces active immunity to prevent influenza caused by the B/Phuket/3073/2013-like and B/Austria/1359417/202-like virus strains in individuals recommended for seasonal flu vaccination, including adults and children as defined by public health guidelines.

GNH India supplies Influvac Tetra as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide. The company adheres to stringent quality standards and provides regulatory documentation for global distribution.

Manufacturer / TM Owner

Viatris Healthcare Limited

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Indications & Clinical Uses

Influvac Tetra is a quadrivalent influenza vaccine used to prevent influenza infection caused by specific B virus strains.

  • Influenza B/Phuket/3073/2013-like virus: prevention of seasonal influenza caused by this strain.
  • Influenza B/Austria/1359417/202-like virus: prevention of seasonal influenza caused by this strain.
  • Seasonal influenza (broad protection): reduction of disease incidence and complications from circulating influenza viruses covered by the quadrivalent formulation.

How It Works

  • Influvac Tetra contains inactivated influenza virus antigens that are recognized by the immune system, prompting B‑cell and T‑cell activation. This leads to the production of strain‑specific antibodies and cellular immunity, establishing active protection against the included influenza B virus strains upon subsequent exposure.

Side Effects

Common side effects are generally mild and transient.

Common Side Effects

  • Injection site pain: mild soreness at the injection site.
  • Redness: localized erythema around the injection area.
  • Swelling: temporary edema at the site.
  • Fever: low‑grade temperature rise within 24 hours.
  • Headache: mild to moderate headache post‑vaccination.
  • Myalgia: muscle aches lasting a day or two.

Serious or Rare Side Effects

  • Anaphylaxis: severe allergic reaction requiring immediate medical attention.
  • Guillain‑Barré syndrome: rare neurological disorder reported after influenza vaccination.
  • Seizures: infrequent occurrence, especially in children with fever.
  • High fever: temperature above 39 °C persisting beyond 48 hours.
  • Severe allergic reaction: urticaria, angioedema, or respiratory distress.
  • Thrombocytopenia: rare drop in platelet count.

Precautions & Warnings

Vaccination should be considered with attention to individual health status.

  • Allergy history: avoid in persons with severe hypersensitivity to any vaccine component.
  • Acute illness: postpone vaccination if the individual has moderate or severe feverish illness.
  • Observation: monitor the patient for at least 15 minutes after injection for immediate reactions.
  • Egg protein sensitivity: assess risk if the vaccine contains residual egg proteins.
  • Pregnancy and lactation: consult a healthcare professional; data are limited.
  • Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

Avoid Interactions

Vaccines may interact with other medical products that affect immune response.

Major Interactions (Avoid)

  • Live attenuated vaccines: avoid co‑administration within 4 weeks.
  • Immunoglobulin therapy: may diminish vaccine efficacy if given concurrently.
  • Blood products: can interfere with immune response when administered close to vaccination.

Moderate Interactions (Monitor Closely)

  • Immunosuppressive drugs: may reduce antibody production, monitor serologic response.
  • Antipyretics (e.g., acetaminophen): may mask post‑vaccination fever.
  • Corticosteroids: high‑dose therapy could attenuate immune response.

Frequently Asked Questions

Influvac Tetra is a quadrivalent influenza vaccine indicated for the prevention of seasonal influenza caused by the B/Phuket/3073/2013-like and B/Austria/1359417/202-like virus strains. It is administered to individuals who are eligible for annual flu vaccination according to public health recommendations.

The vaccine contains inactivated influenza virus antigens that stimulate the immune system to produce strain‑specific antibodies and activate T‑cells. This immune response creates active immunity, enabling the body to recognize and neutralize the targeted influenza B viruses if encountered later.

The dose and schedule of Influvac Tetra are determined by the prescribing healthcare professional based on age, health status, and local vaccination guidelines. No specific dosing regimen is provided here; the prescriber will set the appropriate amount.

Safety data for Influvac Tetra in pregnancy and lactation are limited. Healthcare providers should evaluate the potential benefits and risks before administering the vaccine to pregnant or breastfeeding individuals, following local regulatory guidance.

To order Influvac Tetra, submit an enquiry on the product page at gnhindia.com with the required quantity. GNH India supplies hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, cold‑chain shipping details and necessary import documentation.

Influvac Tetra is a quadrivalent vaccine that includes two influenza B strains (B/Phuket and B/Austria) in addition to the standard A strains found in many seasonal vaccines. Compared with trivalent formulations, it offers broader protection against circulating B viruses, which can improve overall vaccine effectiveness in seasons where B strains predominate.

Influvac Tetra must be stored refrigerated at 2‑8 °C. It should be kept in the original packaging, protected from light, and must not be frozen or shaken. Proper cold‑chain management is essential to maintain vaccine potency until administration.

The vaccine is supplied as an injectable solution and is administered by a trained healthcare professional via intramuscular or subcutaneous injection, typically into the deltoid muscle of the upper arm. The injection site should be observed for any immediate adverse reactions.

Serious adverse events, although rare, can include anaphylaxis, Guillain‑Barré syndrome, severe allergic reactions, high‑grade fever, seizures, and thrombocytopenia. Recipients should be monitored after vaccination, and any severe symptoms should be reported to a medical professional promptly.

Individuals with a known severe allergy to any component of the vaccine, those who have experienced a previous serious reaction to an influenza vaccine, or persons with contraindications identified by their healthcare provider should not receive Influvac Tetra. Consultation with a medical professional is essential for any concerns.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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