Which of the following pairs of diseases is caused by virus?

Options

A. Rabies and Mumps
B. Cholera and Tuberculosis
C. Typhoid and Tetanus
D. AIDS and Syphilis

Explanation

To determine which of the following pairs of diseases is caused by a virus, we will analyze each option provided:

1. **Rabies and Mumps**:
- **Rabies**: This is a viral infection caused by the rabies virus. It is typically transmitted through the bite of an infected animal, such as a stray dog.
- **Mumps**: This is also a viral infection caused by the mumps virus. It primarily affects the salivary glands and can be prevented through vaccination.
- **Conclusion**: Both rabies and mumps are caused by viruses.

2. **Cholera and Tuberculosis**:
- **Cholera**: This disease is caused by the bacterium *Vibrio cholerae*. It primarily affects the intestines and is transmitted through contaminated water.
- **Tuberculosis**: This is caused by the bacterium *Mycobacterium tuberculosis*, which primarily affects the lungs.
- **Conclusion**: Both cholera and tuberculosis are bacterial infections.

3. **Typhoid and Tetanus**:
- **Typhoid**: This disease is caused by the bacterium *Salmonella typhi*. It is transmitted through contaminated food and water.
- **Tetanus**: This is caused by the bacterium *Clostridium tetani*, which can enter the body through wounds.
- **Conclusion**: Both typhoid and tetanus are bacterial infections.

4. **AIDS and Syphilis**:
- **AIDS**: This is caused by the Human Immunodeficiency Virus (HIV), which is a virus.
- **Syphilis**: This disease is caused by the bacterium *Treponema pallidum*, which is usually transmitted through sexual contact.
- **Conclusion**: AIDS is a viral infection, but syphilis is a bacterial infection.

After analyzing all the options, we find that the only pair of diseases caused by viruses is **Rabies and Mumps**.

**Final Answer**: The correct pair of diseases caused by a virus is **Rabies and Mumps**.

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