Diseases which are easily transmitted from one person to another are called

Options

A. Congenital diseases
B. Non-infectious diseases
C. Hereditary diseases
D. Infectious diseases

Answer

To answer the question "Diseases which are easily transmitted from one person to another are called," we need to analyze the provided options one by one.

### Step-by-Step Solution:

1. **Understanding the Question**: The question is asking for a specific term that describes diseases that can be easily passed from one individual to another.

2. **Evaluating the Options**:
- **Congenital Diseases**: These are conditions that are present at birth. They are not transmitted from one person to another. Examples include clubfoot and cleft lip. Therefore, this option is incorrect.

- **Non-Infectious Diseases**: These diseases cannot be transmitted from one person to another. They are typically caused by lifestyle choices or environmental factors. Examples include cardiovascular diseases, cancer, and diabetes. Thus, this option is also incorrect.

- **Hereditary Diseases**: These are diseases that are passed from parents to their offspring through genes. Examples include sickle cell anemia and hemophilia. They are not transmitted between individuals but rather inherited, making this option incorrect as well.

- **Infectious Diseases**: These diseases are caused by infectious agents such as bacteria, viruses, or protozoa. They can be easily transmitted from an infected person to a healthy person. Common examples include typhoid and malaria. This option is correct.

3. **Conclusion**: Based on the analysis of the options, the correct answer to the question is **infectious diseases**.

### Final Answer:
Diseases which are easily transmitted from one person to another are called **infectious diseases**.

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