Which of the following is not immunized by triple antigen?

Options

A. Typhoid
B. tetanus
C. Diphtheria
D. Whooping cough

Answer

To determine which of the following is not immunized by the triple antigen, we need to first understand what the triple antigen vaccine is and what diseases it protects against.

### Step-by-Step Solution:

1. **Understand the Triple Antigen (DPT) Vaccine**:
- The triple antigen is commonly known as the DPT vaccine. It protects against three diseases: Diphtheria, Pertussis (whooping cough), and Tetanus.

2. **Identify the Components of the DPT Vaccine**:
- **Diphtheria (D)**: Caused by the bacterium *Corynebacterium diphtheriae*.
- **Pertussis (P)**: Also known as whooping cough, caused by *Bordetella pertussis*.
- **Tetanus (T)**: Caused by the bacterium *Clostridium tetani*.

3. **Consider the Other Options**:
- The question asks which disease is not covered by the triple antigen. Common diseases that might be considered include Typhoid, Polio, and Measles, among others.

4. **Identify the Disease Not Covered by DPT**:
- Typhoid is caused by *Salmonella typhi* and is not included in the DPT vaccine. Therefore, it is the disease that is not immunized by the triple antigen.

5. **Conclusion**:
- The answer to the question is Typhoid, as it is not immunized by the triple antigen vaccine.

### Final Answer:
Typhoid is not immunized by the triple antigen.

---