This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'The following statements are true about DPT vaccine except - \nSelect and explain. \nA. Aluminium salt has an adjuvant effect, B. Whole cell killed bacteria of Bordetella peusis has an adjuvant effect, C. Presence of acellular peusis component, D. Presence of H.Influenza B component increase its immunolgenecity', 'role': 'user'}, {'content': 'Answer: D \nExplanation: H.influenza B is not a component of DPT vaccine. Acellular peussis component is present. Peussis component in DPT vaacine enhances the potency of the diphtheria toxoid. Adsorption on a mineral carrier like aluminium phosphate or hydroxide increases the immunological effectiveness of the vaccine. Ref:PARK&;S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 23rd edition , Page :162', 'role': 'assistant'}]