Influenza is an infectious disease. It spreads by droplets from nose, throat or mouth of an infected person. Symptoms of influenza develop after 48 hours of contacting with an infectious person. They appear as chills, fever, sore throat, runny nose, cough and congestion. They may vary from one person to another according to their immune response.
What is the new influenza vaccine (Influvac® Tetra)?
Normally, vaccines work by causing the body to produce antibodies against one type or two of influenza viruses.
However, this new vaccine Influvac Tetra provides four different types of influenza viruses.
Each year new types of influenza virus can appear, Influenza vaccine changes to contain new fragments of the new types of virus. Therefore, most specialists gives highly recommendation for this topic every year.
It is an inactivated surface antigen, quadrivalent influenza vaccine is indicated for the prophylaxis of influenza especially for immunosuppressed individuals like pediatrics and geriatrics. Also for individuals who have an increased risk of accompanied complications.
The composition of this vaccine complies with the WHO recommendations concerning the guidelines of influenza vaccine production.
Influvac® Tetra indicate for adults, children from three years of age. It’s also safe in all stages of pregnancy and during breastfeeding.
Method of administration
It’s available in prefilled single dose syringe to administer intramuscularly in arm muscle or deep cutaneous injection.
administer in autumn before the beginning of the influenza season.
What will this new vaccine offer?
Influvac tetra has 4 influenza virus strains as it potentially offers a wider protection against influenza viruses.
Since 1985, 2 antigenically distinct lineages of influenza B viruses (Victoria and Yamagata) have been co-circulating globally.
Trivalent influenza vaccines contain only one B-strain; therefore, mismatch can occur between the recommended lineage for TIV and the circulating B-strain.
Vaccine mismatch for circulating B strain note in a 5 of the 10 previous influenza seasons (2001–2002 through 2010–2011).