HIV & AIDS - signs, symptoms, transmission, causes & pathology

What are HIV and AIDS? HIV, or human immunodeficiency virus, is a virus that targets cells in the immune system. Over time, the immune system begins to fail which is called immunodeficiency, and this increases the risk of infections and tumors that a healthy immune system would usually be able to fend off. These complications are referred to as AIDS, or acquired immunodeficiency syndrome.

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