Which of the following diseases spreads through indirect transmission?

Options

A. Chickenpox
B. Malaria
C. Ringworm
D. Common cold

Answer

To determine which of the listed diseases spreads through indirect transmission, let's analyze each option step by step:

1. **Chickenpox**:
- Chickenpox is caused by the varicella-zoster virus. It spreads directly from person to person through respiratory droplets when an infected person coughs or sneezes, or through direct contact with the blisters.
- **Conclusion**: Chickenpox spreads through direct transmission.

2. **Malaria**:
- Malaria is caused by the Plasmodium parasite, which is transmitted to humans through the bite of infected female Anopheles mosquitoes. The mosquito acts as a vector, meaning that it carries the pathogen from one host (the mosquito) to another (the human).
- **Conclusion**: Malaria spreads through indirect transmission.

3. **Ringworm**:
- Ringworm is a fungal infection caused by dermatophytes. It spreads through direct contact with an infected person, animal, or contaminated surfaces.
- **Conclusion**: Ringworm spreads through direct transmission.

4. **Common Cold**:
- The common cold is primarily caused by rhinoviruses. It spreads directly through respiratory droplets when an infected person coughs or sneezes, or through direct contact with contaminated surfaces followed by touching the face.
- **Conclusion**: Common cold spreads through direct transmission.

Based on the analysis above, the disease that spreads through indirect transmission is **Malaria**.

### Summary:
- **Chickenpox**: Direct transmission
- **Malaria**: Indirect transmission (Correct answer)
- **Ringworm**: Direct transmission
- **Common Cold**: Direct transmission