SPM – MCQ 117 – DPT vaccine

The following statements are true about DPT vaccine except:
A. Aluminium salt has an adjuvant effect
B. Whole killed bacteria of Bordetella pertussis has an adjuvant effect
C. Presence of acellular pertussis component increases its immunogenicity
D. Presence of H. influenzae type B component increases its immunogenicity

Correct answer : D. Presence of H. influenzae type B component increases its immunogenicity

Adjuvants increase the immunogenicity of a vaccine so that a lower quantity of antigen is enough to induce a sufficient antibody response. H.influenzae conjugate vaccine (PRP-D) is not useful for immunization against diphtheria. It does not increase immunogenicity of diphtheria.

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