Influvac Tetra 0.5ml Vaccine

Influvac Tetra 0.5 ml Vaccine is a quadrivalent inactivated influenza vaccine used to help prevent seasonal influenza (flu) in adults and children according to approved age recommendations. It protects against four influenza virus strains, including two Influenza A and two Influenza B strains selected based on global surveillance for the current flu season. The vaccine stimulates the immune system to produce protective antibodies without causing influenza infection. Vaccination significantly reduces the risk of flu illness, hospitalization, severe complications such as pneumonia, and flu-related deaths, particularly in older adults, pregnant women, healthcare workers, individuals with chronic medical conditions, and people with weakened immunity. Since influenza virus strains change frequently, annual vaccination is recommended. Although vaccination cannot guarantee complete protection, it greatly reduces the severity and complications of influenza infection if exposure occurs.

Influvac Tetra 0.5 ml Vaccine is a quadrivalent inactivated influenza vaccine designed to provide protection against four influenza virus strains, including two Influenza A and two Influenza B viruses predicted to circulate during the current flu season. After intramuscular administration, the inactivated viral antigens stimulate the immune system to produce specific antibodies and activate immune memory cells. These antibodies recognize and neutralize influenza viruses upon future exposure, reducing the likelihood of infection or significantly decreasing disease severity.

Annual vaccination is necessary because influenza viruses frequently undergo genetic changes, requiring updated vaccine formulations each season. Influvac Tetra is especially beneficial for older adults, pregnant women, healthcare workers, children, individuals with diabetes, heart disease, lung disease, kidney disease, or weakened immunity, who are at higher risk of severe influenza complications. By preventing influenza and reducing transmission, the vaccine also contributes to community protection, lowers hospitalizations, decreases absenteeism, and helps reduce flu-related complications such as pneumonia and secondary bacterial infections.

Precaution

• Inform your doctor if you have had a severe allergic reaction to a previous influenza vaccine or any vaccine component.
• Postpone vaccination if you have a moderate or severe fever or acute illness.
• Inform your doctor if you have a bleeding disorder or are taking blood-thinning medicines.
• People with weakened immune systems may have a reduced immune response.
• Remain under observation for 15–30 minutes after vaccination to monitor for rare allergic reactions.
• Pregnant and breastfeeding women may receive the vaccine if recommended by their healthcare provider.

Storage

• Store in a refrigerator at 2°C–8°C.
• Do not freeze.
• Keep in the original carton to protect from light.
• Do not use if frozen or if the vaccine appears abnormal.
• Keep out of reach of children.