Which is/are the infection disease/ diseases?
a) Small pox
b) Polioe
c) Diphtheria d) Pneumonia
e) Tetanus

Options

A. c, d
B. b, d, e
C. a, c, e
D. a, b, c, d, e

Answer

To determine which of the listed diseases are infectious, we need to analyze each option based on their modes of transmission.

### Step-by-Step Solution:

1. **Identify the Diseases**: The diseases listed in the question are:
- A) Smallpox
- B) Polio
- C) Diphtheria
- D) Pneumonia
- E) Tetanus

2. **Examine Each Disease**:
- **Smallpox**: This disease is highly infectious and spreads through respiratory droplets (coughing, sneezing) and direct contact with infected individuals or contaminated items.
- **Polio**: Polio is also infectious and primarily spreads through contaminated water and food. It can be transmitted from person to person, especially in areas with poor sanitation.
- **Diphtheria**: Diphtheria is an infectious disease that spreads through respiratory droplets from coughing or sneezing, as well as through direct contact with infected sores or objects.
- **Pneumonia**: Pneumonia can be infectious and is spread through respiratory droplets when an infected person coughs or sneezes.
- **Tetanus**: Tetanus is caused by bacteria found in soil, dust, and animal feces. It is not spread from person to person but can be considered infectious in the sense that it can infect individuals through wounds.

3. **Conclusion**: All the diseases listed (Smallpox, Polio, Diphtheria, Pneumonia, and Tetanus) can be classified as infectious diseases, although Tetanus has a different mode of transmission compared to the others.

### Final Answer:
All options (A, B, C, D, E) are infectious diseases.