Summer OUS 2007 Core 116: AIDS |
AIDS The Awakening by Demaine Francis |
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What is HIV/AIDS? Human Immunodeficiency Virus (HIV) is a type of virus which targets the immune system and is contracted through bodily fluids. Within our immune system there are T- helper cells and macrophages which work together to help protect us against viral and bacterial invaders. However, HIV attacks the T-helper cells and macrophages, thus making it difficult for them to protect us, and eventually increasing our risk of infection. In a healthy human there are 800-1200 T-helper cells per micro liter. In persons infected with HIV, the number of their T-helper cells will gradually decrease. When this count drops below 200 cells per micro liter, they are now considered to have AIDS (Acquired Immune Deficiency Syndrome).(A) |