Which tests are performed to diagnose AIDS?

Explanation

To diagnose AIDS, which is caused by the Human Immunodeficiency Virus (HIV), several tests are performed. Here is a step-by-step explanation of the diagnostic process:

### Step 1: Understanding AIDS and HIV
- **AIDS** (Acquired Immunodeficiency Syndrome) is a condition that results from the advanced stages of HIV infection, where the immune system becomes severely weakened.
- **HIV** (Human Immunodeficiency Virus) is the virus responsible for causing AIDS. It primarily attacks T-helper cells, which are crucial for the immune response.

### Step 2: Initial Screening with ELISA
- The first test commonly used to diagnose HIV infection is the **ELISA** (Enzyme-Linked Immunosorbent Assay).
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