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HIV-1 is the most common and most pathogenic strain of the virus. As of 2022, approximately 1.3 million such infections occur annually. [4] [5] Scientists divide HIV-1 into a major group (group M) and two or more minor groups, namely groups N, O and possibly a group P.
The Human Immunodeficiency Virus is a virus that causes Acquired Immunodeficiency Syndrome . HIV/AIDS can be transmitted sexually , via contaminated needles or blood transfusions, and from mother to child during pregnancy, birth or breast-feeding.
Two types of HIV have been characterized: HIV-1 and HIV-2. HIV-1 is the virus that was initially discovered and termed both lymphadenopathy associated virus (LAV) and human T-lymphotropic virus 3 (HTLV-III). HIV-1 is more virulent and more infective than HIV-2, [20] and is the cause of the majority of HIV infections globally. The lower ...
HIV can also disseminate by direct transmission from one cell to another by a process of cell-to-cell spread. [96] [97] The hybrid spreading mechanisms of HIV contribute to the virus' ongoing replication against antiretroviral therapies. [95] [98] Two types of HIV have been characterized: HIV-1 and HIV-2. HIV-1 is the virus that was originally ...
This is a list of infectious diseases arranged by name, ... HIV (Human immunodeficiency virus) AIDS (acquired immunodeficiency syndrome) Antibody test, p24 antigen ...
The genome and proteins of HIV (human immunodeficiency virus) have been the subject of extensive research since the discovery of the virus in 1983. [1] [2] "In the search for the causative agent, it was initially believed that the virus was a form of the Human T-cell leukemia virus (HTLV), which was known at the time to affect the human immune system and cause certain leukemias.
This is a timeline of HIV/AIDS, including but not limited to cases before 1980. Pre-1980s See also: Timeline of early HIV/AIDS cases Researchers estimate that some time in the early 20th century, a form of Simian immunodeficiency virus found in chimpanzees (SIVcpz) first entered humans in Central Africa and began circulating in Léopoldville (modern-day Kinshasa) by the 1920s. This gave rise ...
Using WHO statistics, in 2012 the number of people living with HIV was growing at a faster rate (1.98%) than worldwide human population growth (1.1% annual), [2] and the cumulative number of people with HIV is growing at roughly three times faster (3.22%). The costs of treatment is significantly increasing burden on healthcare systems when ...
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