Which of the following is a pair of viral diseases?

Options

A. Ringworm, AIDS
B. Common cold, AIDS
C. Dysentery, common cold
D. Typhoid, tuberculosis.

Answer

To determine which of the following options contains a pair of viral diseases, we need to analyze each option carefully:

1. **Ringworm and AIDS**:
- **Ringworm**: This is a fungal infection caused by a fungus called *Microsporum*. It is not a viral disease.
- **AIDS**: This is caused by the Human Immunodeficiency Virus (HIV), which is indeed a viral disease.
- Conclusion: This option contains one viral disease (AIDS) and one fungal disease (Ringworm).

2. **Common Cold and AIDS**:
- **Common Cold**: This is caused by various viruses, including rhinoviruses, making it a viral disease.
- **AIDS**: As mentioned, this is caused by HIV, which is also a viral disease.
- Conclusion: This option contains two viral diseases.

3. **Dysentery and Common Cold**:
- **Dysentery**: This is primarily caused by bacteria (like *Shigella*) or amoebas (like *Entamoeba histolytica*), not viruses.
- **Common Cold**: As stated earlier, this is a viral disease.
- Conclusion: This option contains one viral disease (Common Cold) and one bacterial/amoebic disease (Dysentery).

4. **Typhoid and Tuberculosis**:
- **Typhoid**: This is caused by the bacterium *Salmonella Typhi*, making it a bacterial disease.
- **Tuberculosis**: This is caused by *Mycobacterium tuberculosis*, which is also a bacterial disease.
- Conclusion: This option contains two bacterial diseases.

After analyzing all the options, the only pair that consists of both diseases being viral is **Common Cold and AIDS**.

**Final Answer**: The pair of viral diseases is **Common Cold and AIDS**.

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