Human Immunodeficiency Virus
HIV stands for Human Immunodeficiency Virus. It’s a virus that breaks down certain cells in your immune system. When HIV damages your immune system, it’s easier to get sick and even die from infections that your body could normally fight off. HIV kills CD4 cells. Healthy adults generally have a CD4 count of 500 to 1,500 per cubic millimetre. A person with HIV whose CD4 count falls below 200 per cubic millimetre will be diagnosed with AIDS. AIDS is the most advanced stage of HIV, but just because a person has HIV doesn’t mean they’ll develop AIDS. This makes the person vulnerable to a wide range of illnesses and leads to raise of many opportunistic infections. The shortened life expectancy linked with untreated AIDS isn’t a direct result of the syndrome itself. Rather, it’s a result of the diseases and complications that arise from having an immune system weakened by AIDS.
- Track 1-1 Weakens Immune system
- Track 2-2 Viral infection
- Track 3-3 Progression to Stage 3
- Track 4-4 Development of AIDS
- Track 5-5 Pneumocystis carinii pneumonia