HIV and AIDS virus infection

HIV causes acquired immunodeficiency syndrome (AIDS), a chronic, life-threatening disease. HIV weakens your immune system, making it harder to fight infections.

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Symptom

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Symptomatic HIV infection

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Progression to AIDS

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Causes

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How does HIV become AIDS?

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How HIV spread

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Risk factor

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HIV and AIDS virus infection

HIV causes acquired immunodeficiency syndrome (AIDS), a chronic, life-threatening disease. HIV weakens your immune system, making it harder to fight infections.

Symptom

– Fever – Headache – Muscle aches and joint pain – Rash – Sore throat and painful mouth sore

Symptomatic HIV infection

– Diarrhea – Weight lo – Oral yeast infection (thrush) – Shingles (herpes zoster)

Progression to AIDS

– Sweat – Chill – Recurring fever – Chronic diarrhea

Causes

Viruses cause HIV. Sexual contact, needle sharing, contaminated blood, or mother-to-child transmission during pregnancy, delivery, or nursing can transmit it.

How does HIV become AIDS?

HIV can be undiagnosed for years before causing AIDS. If your CD4 T cell count drops below 200 or you have a major infection or malignancy, you have AIDS.

How HIV spread

During sexual intercourse, mouth sores or minor tears in the rectum or vagina might let the virus in.

Risk factor

Every sex, use a fresh latex or polyurethane condom. Anal sex is riskier than vaginal. HIV risk rises with several sexual partners.

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