Learn about Influvac Tetra uses, dosage, side effects, food interactions, and more. Get all the details about Influvac Tetra from MedicinesFAQ. Influvac Tetra 2025/2026 Vaccine is given as an injection into a muscle by a doctor or nurse. It is usually given just before the cold season when the flu virus begins to increase. Normally, only one injection is required to protect you for a year. Influvac Tetra 2025 Vaccine helps protect against seasonal flu strains by stimulating the immune system to produce antibodies. It reduces the risk of getting infected, lowers the severity of illness if one does get sick, and decreases flu-related complications, especially in older adults, children, and people with chronic conditions. Influvac Tetra 2024 Vaccine helps protect against influenza (flu) by exposing the body to a small dose of inactivated proteins from the influenza virus, allowing the immune system to build immunity. It does not treat an existing flu infection. The vaccine is administered via intramuscular injection by a doctor or nurse. This vaccine is especially important for the elderly or those with chronic health conditions such as diabetes, heart failure, kidney failure, or chronic obstructive pulmonary ...