Biology
Assertion (A): The vaccine for tuberculosis is made up of living, fully poisonous germs.
Reason (R): Living, weakened germs in the vaccine were not satisfactory to prevent the disease.
- A is True and R is False.
- A is False and R is True.
- Both A and R are True.
- Both A and R are False.
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Answer
Both A and R are False.
Reason — The BCG vaccine (Bacillus Calmette–Guérin) for tuberculosis is made from live, weakened Mycobacterium bacteria. These germs are non poisonous and do not cause disease but stimulate an immune response.
Living, weakened germs used in the BCG vaccine are effective in providing protection, especially in children.
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