Social & Preventive Medicine Which of the following does not increase the immunological effectiveness of DPT vaccine? A Aluminium phosphate B Inactivated whole cell peussis vaccine C Hib polysaccharide conjugated to diphtheria toxoid D Purified and detoxified components of B. peussis 💡 Explanation Which of the following does not increase the immunological effectiveness of DPT vaccine? ✓ Correct Answer: C. Hib polysaccharide conjugated to diphtheria toxoid