Which one of the following sets includes bacterial diseases ?

Options

A. Tetanus, tuberculosis, Measles
B. Diphtheria, leprosy, plague
C. Cholera, typhoid, mumps
D. Malaria, mumps, poliomyelitis

Answer

To determine which set includes bacterial diseases, we need to analyze each option and identify the causative agents of the diseases listed.

### Step-by-Step Solution:

1. **Analyze Option A:**
- Tetanus: Caused by *Clostridium tetani* (bacterial).
- Tuberculosis: Caused by *Mycobacterium tuberculosis* (bacterial).
- Measles: Caused by a virus (not bacterial).
- **Conclusion:** This option includes 2 bacterial diseases (tetanus and tuberculosis) but also includes a viral disease (measles).

2. **Analyze Option B:**
- Diphtheria: Caused by *Corynebacterium diphtheriae* (bacterial).
- Leprosy: Caused by *Mycobacterium leprae* (bacterial).
- Plague: Caused by *Yersinia pestis* (bacterial).
- **Conclusion:** All three diseases listed in this option are caused by bacteria.

3. **Analyze Option C:**
- Cholera: Caused by *Vibrio cholerae* (bacterial).
- Typhoid: Caused by *Salmonella typhi* (bacterial).
- Mumps: Caused by a virus (not bacterial).
- **Conclusion:** This option includes 2 bacterial diseases (cholera and typhoid) but also includes a viral disease (mumps).

4. **Analyze Option D:**
- Malaria: Caused by *Plasmodium* (protozoan, not bacterial).
- Mumps: Caused by a virus (not bacterial).
- Poliomyelitis: Caused by a virus (not bacterial).
- **Conclusion:** This option does not include any bacterial diseases.

### Final Conclusion:
The only option that includes only bacterial diseases is **Option B** (Diphtheria, Leprosy, and Plague).