Confirmatory test for Typhoid is :

Options

A. ELISA
B. Western blot
C. Widal test
D. All of these

Answer

To determine the confirmatory test for typhoid, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Cause of Typhoid**:
- Typhoid fever is caused by the bacterium *Salmonella typhi*. It is important to know the causative agent to understand the disease better.

2. **Identify the Tests Available**:
- There are various tests available for diagnosing different diseases. In this case, we need to focus on tests related to typhoid fever.

3. **Evaluate the Options**:
- **Option 1: ELISA**: This test is primarily used for detecting HIV infection and is not specific for typhoid. Therefore, it is not the correct answer.
- **Option 2: Western Blot**: This test is used to confirm positive results from the ELISA test for HIV. It is not used for typhoid diagnosis, making it an incorrect option as well.
- **Option 3: Vidal Test**: This test is specifically designed to detect typhoid fever by identifying the presence of *Salmonella typhi* antibodies in the blood. This makes it the correct choice for confirming typhoid.

4. **Conclusion**:
- After evaluating all the options, the confirmatory test for typhoid is the Vidal test.

### Final Answer:
The confirmatory test for typhoid is the **Vidal test**.

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