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HIV is the virus that can eventually lead to full-blown AIDS. Infection occurs through unprotected sex or sharing needles with an infected person, which weakens the body’s immune system by destroying white blood cells. HIV infection progresses in three stages
Choose a topic you’re interested in about HIV infection symptoms below:
HIV Stage 1: Acute Infection
This stage happens within the first 2–4 weeks after infection. Symptoms are like a cold or flu, such as body aches, headache, and sometimes a rash or swollen lymph nodes.
At this stage, the virus attacks CD4 white blood cells, which weakens the immune system.
In the first stage after infection, HIV symptoms usually feel like a common illness, so many people may not realize they are infected.
Over time, the body gradually produces new CD4 white blood cells to rebuild immunity, but they don’t work as well as before the infection.
HIV Stage 2: Clinical Latency (Chronic Stage)
In this stage, the body shows few or no symptoms because the virus multiplies slowly. It can take up to 10 years for the virus to weaken the immune system enough to progress to Stage 3.
Poor health or lack of care may cause the virus to advance faster.
HIV Stage 3: AIDS
This is the final stage of HIV infection, where the immune system is severely weakened and can no longer fight the virus.
The body is at its weakest and highly vulnerable to opportunistic infections. The immune system can no longer fight off viruses, and previous infections can recur and become much harder to treat.
If you think you may be at risk of HIV, get a blood test at a hospital or STI clinic to find out if you are infected. Early diagnosis allows for timely treatment and helps protect your health. Always use condoms during sex to stay safe.
Interesting Articles
- What to know before getting tested for HIV
- HIV vs. AIDS: What’s the difference and which behaviors are risky?
- What happens after HIV infection
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Onuma Peanphon ,M.D.
General Practitioner
Latest edit : 10/12/2025 (Website updated)
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