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# Vaccine-Induced Humoral Immunity This table describes how different vaccines induce an immune response to protect against various infectious diseases. | Infectious Disease | Vaccine | Mechanism of Protective Immunity | |---|---|---| | Polio | Injected inactivated poliovirus (Salk) and oral atten...

# Vaccine-Induced Humoral Immunity This table describes how different vaccines induce an immune response to protect against various infectious diseases. | Infectious Disease | Vaccine | Mechanism of Protective Immunity | |---|---|---| | Polio | Injected inactivated poliovirus (Salk) and oral attenuated poliovirus (Sabin) | Neutralization of virus by IgG or by mucosal IgA antibody | | Tetanus, diphtheria | Toxoids | Neutralization of toxin by systemic IgG antibody | | Hepatitis A or B | Recombinant viral envelope proteins | Neutralization of virus by mucosal IgA or systemic IgG antibody | | Pneumococcal pneumonia, Haemophilus influenzae, Neisseria meningitidis | Conjugate vaccines composed of bacterial capsular polysaccharide attached to a carrier protein | Opsonization and phagocytosis mediated by IgM and IgG antibodies, directly or secondary to complement activation |