Which is correct :common cold -droplet transmission 2. typhoid- contaminated food 3.AIDS- shaking hand 4. ringworm- using infected towels

Options

A. 1 and 2
B. 1 and 3
C. 1,2 and 4
D. 3 and 4

Answer

To determine which statements regarding the transmission of diseases are correct, we will analyze each option one by one.

### Step-by-Step Solution:

1. **Common Cold - Droplet Transmission**
- The common cold is indeed transmitted through droplets. When an infected person coughs or sneezes, tiny droplets containing the virus are released into the air. A healthy person can inhale these droplets and become infected.
- **Conclusion**: This statement is **correct**.

2. **Typhoid - Contaminated Food**
- Typhoid fever is caused by the bacterium Salmonella typhi, which is typically spread through contaminated food and water. Consuming food or water that has been contaminated with the bacteria can lead to infection.
- **Conclusion**: This statement is **correct**.

3. **AIDS - Shaking Hands**
- AIDS (Acquired Immunodeficiency Syndrome) is caused by the Human Immunodeficiency Virus (HIV). HIV is transmitted through specific bodily fluids such as blood, semen, vaginal secretions, and breast milk. It is not transmitted through casual contact like shaking hands.
- **Conclusion**: This statement is **incorrect**.

4. **Ringworm - Using Infected Towels**
- Ringworm is a fungal infection caused by dermatophytes. It is contagious and can be spread through direct contact with an infected person or by using personal items such as towels that have been contaminated.
- **Conclusion**: This statement is **correct**.

### Final Summary:
- The correct statements are:
1. Common Cold - Droplet Transmission: **Correct**
2. Typhoid - Contaminated Food: **Correct**
3. AIDS - Shaking Hands: **Incorrect**
4. Ringworm - Using Infected Towels: **Correct**

Thus, the correct options are 1, 2, and 4.