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Acquired immunodeficiency syndrome (AIDS) is defined as an HIV infection with either a CD4 + T cell count below 200 cells per μL or the occurrence of specific diseases associated with HIV infection. [32] In the absence of specific treatment, around half of people infected with HIV develop AIDS within ten years. [32]
This acute viremia is associated in virtually all people with the activation of CD8 + T cells, which kill HIV-infected cells, and subsequently with antibody production, or seroconversion. The CD8 + T cell response is thought to be important in controlling virus levels, which peak and then decline, as the CD4 + T cell counts rebound.
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] Without treatment, the average survival time after infection with HIV is estimated to be 9 to 11 years, depending on the HIV subtype. [4]
Duesberg notes that diseases associated with AIDS differ between African and Western populations, concluding that the causes of immunodeficiency must be different. Tuberculosis is much more commonly diagnosed among AIDS patients in Africa than in Western countries, while PCP conforms to the opposite pattern. [32]
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.
Scanning electron micrograph of HIV-1, colored green, budding from a cultured lymphocyte Diagram of HIV. HIV/AIDS research includes all medical research that attempts to prevent, treat, or cure HIV/AIDS, as well as fundamental research about the nature of HIV as an infectious agent and AIDS as the disease caused by HIV.
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