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 only bacterial diseases, we need to analyze each option provided in the question.

### Step-by-Step Solution:

1. **Examine the First Option: Tetanus, Tuberculosis, and Measles**
- **Tetanus**: Caused by the bacterium *Clostridium tetani* (Bacterial disease).
- **Tuberculosis**: Caused by the bacterium *Mycobacterium tuberculosis* (Bacterial disease).
- **Measles**: Caused by the measles virus (Viral disease).
- **Conclusion**: This option includes both bacterial and viral diseases, so it is not correct.

2. **Examine the Second Option: Diphtheria, Leprosy, and Plague**
- **Diphtheria**: Caused by the bacterium *Corynebacterium diphtheriae* (Bacterial disease).
- **Leprosy**: Caused by the bacterium *Mycobacterium leprae* (Bacterial disease).
- **Plague**: Caused by the bacterium *Yersinia pestis* (Bacterial disease).
- **Conclusion**: This option includes only bacterial diseases, making it a valid choice.

3. **Examine the Third Option: Cholera, Typhoid, and Mumps**
- **Cholera**: Caused by the bacterium *Vibrio cholerae* (Bacterial disease).
- **Typhoid**: Caused by the bacterium *Salmonella typhi* (Bacterial disease).
- **Mumps**: Caused by the mumps virus (Viral disease).
- **Conclusion**: This option includes both bacterial and viral diseases, so it is not correct.

4. **Examine the Fourth Option: Malaria, Mumps, and Poliomyelitis**
- **Malaria**: Caused by protozoan parasites (Protozoal disease).
- **Mumps**: Caused by the mumps virus (Viral disease).
- **Poliomyelitis**: Caused by the poliovirus (Viral disease).
- **Conclusion**: This option includes no bacterial diseases, so it is not correct.

### Final Answer:
The only set that includes only bacterial diseases is **Option 2: Diphtheria, Leprosy, and Plague**.

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