Question

Match items in List I with items in List II

• A. A-II, B-I, C-III, D-IV
• B. A-II, B-III, C-I, D-IV
• C. A-III, B-I, C-IV, D-II
• D. A-II, B-III, C-IV, D-I

Hint:

Toxoid = Toxin; Attenuated = Weakened.

Answer 1

The Correct Option is D

Step 1: Concept
Different vaccine types utilize different forms of a pathogen or its components to trigger immunity.

Step 2: Meaning
- Inactivated: Killed using chemicals/heat (II).
- Live attenuated: Pathogen is alive but weakened (III).
- Conjugate: Weak antigen (like sugars) linked to a carrier protein (IV).
- Toxoid: Based on inactivated bacterial toxins (I).

Step 3: Analysis
Matching the pairs based on standard vaccinology definitions gives: A-II, B-III, C-IV, D-I.

Step 4: Conclusion
Option (D) correctly pairs all vaccine types with their descriptions. Final Answer: (D)