BCG vaccine is an example of
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• BCG → Live attenuated M. bovis
• Used for tuberculosis prevention
- Live attenuated vaccine
- Heat killed vaccine
- Recombinant vaccine
- Subunit vaccine
The Correct Option is A
Solution and Explanation
• Prepared from a weakened (attenuated) strain of Mycobacterium bovis
• Stimulates immune response without causing disease
Step 1: Analyzing vaccine types.
• Live attenuated vaccine: Contains weakened pathogen → Correct for BCG.
• Heat killed vaccine: Contains dead organisms → Incorrect.
• Recombinant vaccine: Produced using genetic engineering → Incorrect.
• Subunit vaccine: Contains only antigenic parts → Incorrect.
Step 2: Selecting the correct answer.
Thus, BCG is a live attenuated vaccine.
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