Leprosy is due to a

Options

A. Mycobacterium
B. Corynebacterium
C. Treponema
D. Neisseria

Answer

**Step-by-Step Solution:**

1. **Understanding Leprosy**: Leprosy is an infectious disease characterized by severe disfiguring skin sores and nerve damage, particularly affecting the arms and legs.

2. **Identifying the Causative Agent**: The disease is caused by a specific type of bacteria. To answer the question, we need to identify which bacterium is responsible for leprosy.

3. **Evaluating the Options**:
- **Option A: Mycobacterium** - This is a genus of bacteria that includes the causative agent of leprosy.
- **Option B: Cornebacterium** - This genus is not known to cause leprosy.
- **Option C: Treponema** - This genus is associated with syphilis and not leprosy.
- **Option D: Neisseria** - This genus includes bacteria that cause diseases like gonorrhea and meningitis, but not leprosy.

4. **Confirming the Correct Answer**: Mycobacterium leprae is the specific bacterium that causes leprosy. It is a slow-growing bacterium that primarily affects the skin and peripheral nerves.

5. **Conclusion**: Based on the evaluation of the options, the correct answer to the question "Leprosy is due to a" is **Option A: Mycobacterium**.