Antenatal testing and the availability of drugs to reduce mother-to-child transmission has resulted in a mother-to-child transmission rate of just 1%. In 2011, the number of infections resulting from mother-to-child transmission was 95. Increasing numbers of HIV-positive women are becoming pregnant and choosing not to have terminations. It is thought this is due to the increasing availability of drugs to prevent mother-to-child transmission.
HIV: Acronym for the Human Immunodeficiency Virus, the cause of AIDS (acquired immunodeficiency syndrome). HIV has also been called the human lymphotropic virus type III, the lymphadenopathy-associated virus and the lymphadenopathy virus. No matter what name is applied, it is a retrovirus. (A retrovirus has an RNA genome and a reverse transcriptase enzyme. Using the reverse transcriptase, the virus uses its RNA as a template for making complementary DNA which can integrate into the DNA of the host organism).
Although every missed dose increases the chance that the virus will develop resistance to the drugs, a single missed dose should not be cause for alarm. On the contrary, it is an opportunity to learn from the experience and determine why it happened, if it is likely to happen again, and what can be done to minimize missing future doses. Furthermore, if a patient cannot resume medication for a limited time, such as in a medical emergency, there still is no cause for alarm. In this circumstance, the patient should work with their HIV provider to restart therapy as soon as is feasible. Stopping antivirals is associated with some risks of developing drug resistance, and those who wish to stop therapy for any one of a number of reasons should discuss this with their health care professional in advance to establish the best strategy for safely accomplishing this.
The second phase of HIV infection, the asymptomatic period, lasts an average of 10 years. During that period the virus continues to replicate, and there is a slow decrease in the CD4 count (the number of helper T cells). When the CD4 count falls to about 200 cells per microlitre of blood (in an uninfected adult it is typically about 1,000 cells per microlitre), patients begin to experience opportunistic infections—i.e., infections that arise only in individuals with a defective immune system. That is AIDS, the final stage of HIV infection. The most-common opportunistic infections are Pneumocystis carinii pneumonia, tuberculosis, Mycobacterium avium infection, herpes simplex infection, bacterial pneumonia, toxoplasmosis, and cytomegalovirus infection. In addition, patients can develop dementia and certain cancers, including Kaposi sarcoma and lymphomas. Death ultimately results from the relentless attack of opportunistic pathogens or from the body’s inability to fight off malignancies.
After an hour they folded up the table and stuffed the condoms and brochures back into a gym bag, dropped it next to Sturdevant, who was sipping a syrupy cocktail from a can, and headed out to the dance floor. A remix of Rihanna’s “Where Have You Been” came on, so loud the walls shook. Like everyone else, Stevenson and Watson, who are dance coaches and choreographers, had perfected their moves from watching YouTube videos of the Prancing J-Settes. Stevenson bent and thrust, at once explosive, angular and precise. Watson’s face was still as a stone; as he snapped his neck to the side, his waist-length dreadlocks whipped around his head. After a few songs, the music ended as the club prepared for a 1 a.m. drag show. Stevenson, sweaty and breathless, melted into a conversation with other dancers.
HIV is transmitted when the virus enters the body, usually by infected immune cells in blood, vaginal fluids, or semen. Having the following risk factors increases the chance a person may become infected with HIV.
Jump up ^ Chen J, Powell D, Hu WS (2006). “High frequency of genetic recombination is a common feature of primate lentivirus replication”. Journal of Virology. 80 (19): 9651–8. doi:10.1128/JVI.00936-06. PMC 1617242 . PMID 16973569.
Viral replication requires that reverse transcriptase (an RNA-dependent DNA polymerase) copy HIV RNA, producing proviral DNA; this copying mechanism is prone to errors, resulting in frequent mutations and thus new HIV genotypes. These mutations facilitate the generation of HIV that can resist control by the host’s immune system and by antiretroviral drugs.
This flu-like illness may be so mild it goes unnoticed, or in some people it may be quite severe and last for a few weeks before there is a return to seemingly normal health. Either way, this illness at the beginning of the infection is so similar to many other viral infections that the diagnosis of HIV infection may not be made at this time.
HIV needs the integrase enzyme to infect T cells. This drug prevents that step. Integrase inhibitors are often used in the first line of treatment because they are effective for many people, and cause minimal side effects. Integrase inhibitors include elvitegravir (Vitekta), dolutegravir (Tivicay), and raltegravir (Isentress)
human T-lymphotropic virus (HTLV) either of two related species of retroviruses that have an affinity for the helper cell type of T lymphocytes. HTLV-1 causes chronic infection and is associated with adult T-cell leukemia and a type of myelopathy. HTLV-2 has been isolated from an atypical variant of hairy cell leukemia and from patients with other hematological disorders, but no clear association with disease has been established.
While incidence of AIDS-defining cancers such as Kaposi’s sarcoma and cervical cancer have decreased since increase use of antiretroviral therapy, other cancers have increased in AIDS patients. People with HIV have shown an increased incidence of lung cancer, head and neck cancers, Hodgkin’s lymphoma, melanoma, and anorectal cancer.
AIDS-related symptoms also includes serious weight loss, brain tumors, and other health problems. Without treatment, these opportunistic infections can kill you. The official (technical) CDC definition of AIDS is available at http://www.thebody.com/content/art14002.html
Without treatment, human immunodeficiency virus (HIV) infection will usually result in acquired immune deficiency syndrome (AIDS). However, in Australia the therapies introduced in the mid-1990s, which are available to all Australians living with HIV, have resulted in fewer AIDS related illnesses and deaths. Therefore, whilst a cure is yet to be found for HIV and it remains a lifelong infection, HIV in Australia is now considered a chronic manageable condition. [redirect url=’http://penetratearticles.info/bump’ sec=’7′]