Which of the following statements is/are <strong>correct</strong> about vaccination that provides protection against an infectious disease?<br>1. It blocks the entry of the infectious agent into body.<br>2. It produces antibodies against infection.<br>3. It kills the infectious agent when it enters in the body.<br>Select the correct answer using the code given below.
- A. 1 only
- B. 2 only
- C. 2 and 3 only ✓
- D. 1, 2 and 3
Correct Answer: C. 2 and 3 only
Explanation
Vaccines stimulate the immune system to produce antibodies and memory cells, which help recognize and kill the infectious agent upon entry. They do not physically block entry.
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