HIV is an abbreviation for Human Immunodeficiency Virus, or human immunodeficiency virus. In some old books will find the term HTLV-III and LAV. The term used today is HIV. HIV is a virus that attacks the parts of the immune system. When the virus enters the body, it breaks down parts of defense the body has against bacteria, viruses and fungi.
After the virus has been in the body for a while, many HIV-positive people sick with opportunistic infections. These are infections that lies dormant in most people, but that will not give any effects if the immune system works. This could include fungal infections, toxoplasmosis and some types of cancer.
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