The adjuvant used in DPT vaccine is -: (A) A1, (B) Mg, (C) Zn, (D) Formaldehyde
Answer is A. Adsorption of DPT vaccine on a mineral carrier like aluminium phosphate or hydroxide increases the immunological effectiveness of vaccine. Ref:PARK&;S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 23rd edition , Page :162