Ads
related to: human immunodeficiency virus ppt
Search results
Results From The WOW.Com Content Network
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 ]
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 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.
After the virus enters the body there is a period of rapid viral replication, leading to an abundance of virus in the peripheral blood. During primary infection, the level of HIV may reach several million virus particles per milliliter of blood. [2] This response is accompanied by a marked drop in the numbers of circulating CD4 + T cells.
In 1983, researchers at the Institut Pasteur in Paris identified the retrovirus now known as the Human Immunodeficiency Virus (HIV) as the cause of acquired immunodeficiency syndrome (AIDS) in humans.
Human immunodeficiency virus (HIV) is a lentivirus that has two major species, HIV-1 which causes the majority of the epidemic, and HIV-2, a close relative whose distribution is concentrated in western Africa. [6] HIV infection was first described in 1981 in San Francisco and New York City. [7]