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The human immunodeficiency virus (HIV) [8] [9] [10] is a retrovirus [11] that attacks the immune system.It is a preventable disease. [5] It can be managed with treatment and become a manageable chronic health condition. [5]
The human immunodeficiency viruses (HIV) are two species of Lentivirus (a subgroup of retrovirus) that infect humans.Over time, they cause acquired immunodeficiency syndrome (AIDS), [1] [2] a condition in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive. [3]
Figure 1. Early Symptoms of HIV. The stages of HIV infection are acute infection (also known as primary infection), latency, and AIDS.Acute infection lasts for several weeks and may include symptoms such as fever, swollen lymph nodes, inflammation of the throat, rash, muscle pain, malaise, and mouth and esophageal sores.
False-color scanning electron micrograph of HIV-1, in green, budding from cultured lymphocyte. AIDS is caused by a human immunodeficiency virus (HIV), which originated in non-human primates in Central and West Africa.
The AIDS epidemic, caused by HIV, found its way to the United States between the 1970s and 1980s, [2] but was first noticed after doctors discovered clusters of Kaposi's sarcoma and pneumocystis pneumonia in homosexual men in Los Angeles, New York City, and San Francisco in 1981.
This article lists the reported and registered HIV/AIDS cases by reporting region. A region may refer to a country or subdivision, national HIV records are often complicated incomplete or even nonexistent.
UNAIDS Headquarters building in Geneva, Switzerland. The Joint United Nations Programme on HIV and AIDS (UNAIDS; French: Programme commun des Nations Unies sur le VIH/sida, ONUSIDA) is the main advocate for accelerated, comprehensive and coordinated global action on the HIV/AIDS pandemic.
Sida may refer to: Sida, a genus of cladoceran water fleas; Sida, a genus of flowering plants; Security Identification Display Area, US FAA; Swedish International Development Cooperation Agency, a Swedish governmental agency; Acquired Immune Deficiency Syndrome (AIDS), a disease, abbreviated as SIDA in several languages