Understanding The Tetravalent Flu Vaccine

The tetravalent flu vaccine is designed to protect against four strains of the influenza virus—including two influenza A strains and two influenza B strains. This expanded protection makes it more comprehensive than the trivalent vaccine, which covers only three strains. By targeting an extra strain, it helps lower the chance of infection from flu variants not covered by trivalent vaccines.

This vaccine is recommended for individuals of all ages, particularly those who are more susceptible to severe flu complications. This group includes older adults, young children, pregnant women, people with weakened immune systems, and those managing chronic health issues.