Is the quadrivalent influenza vaccine the same as the hepatitis B vaccine?

The quadrivalent influenza vaccine is not a hepatitis B vaccine. The quadrivalent influenza vaccine is primarily used to prevent infection from influenza viruses, including strains such as A(H1N1), A(H3N2), and the B Yamagata and B Victoria lineages. Receiving the quadrivalent influenza vaccine stimulates the body's immune response against these viral strains, thereby reducing the risk of infection. In contrast, the hepatitis B vaccine is designed to prevent infection by the hepatitis B virus. It works by stimulating the body to produce an immune response specific to the hepatitis B virus, thus preventing the development of hepatitis B.