The role of adjuvant in a DPT vaccine is :-: (A) Decrease hypersensitivity, (B) Decrease absorption of vaccine, (C) Increase antigenicity, (D) Increase the shelf life of a vaccine
Answer is C. Aluminum hydroxide / phosphate is used as Adjuvant/adsorbent in DPT vaccine ; Binds three components (D,P,T) together Increases immunogenicity / Antigenicity - Thiomersal is added to DPT vaccine as a preservative. - Magnesium chloride is added to OPV vaccine: Provides stability.