The human immunodeficiency virus hiv is the virus that causes aids, or acquired immunodeficiency syndrome, a disease that causes the body to lose its natural protection against infection. Scientists identified a type of chimpanzee in central africa as the source of hiv infection in humans. Skapa en bok ladda ner som pdf utskriftsvanlig version. Hiv, som ar forkortning av humant immunbristvirus av engelskans human. Within 2 to 4 weeks after infection with hiv, people may experience a flulike illness, which may last for a few weeks. Treating opportunistic infections among hiv infected adults and adolescents. This is the most serious stage of hiv infection, called aids. They believe that the chimpanzee version of the immunodeficiency virus called simian immunodeficiency virus, or siv most likely was transmitted to humans and mutated into hiv when humans hunted these chimpanzees for meat and came into contact with their infected blood. When people have acute hiv infection, they have a large amount of virus in their blood and are very contagious. Hiv basics hiv services ahf healthcare center near you. However, the virus will still be active, infecting new cells and making copies of itself. Risken att smittasmittas okar da hiv infektionen viruset okar i kroppens celler hos. Preventing new hiv infections and improving access to testing and treatment saves lives and are the pillars of unicef s hiv response. Datos sobre vih y sida sintomas, prevencion y tratamiento.
If left untreated, over time, hiv infection will cause severe damage to the immune system. Some people dont get any symptoms during stages 1 and 2, but they can still pass on hiv. Hiv is a lifelong condition, and without treatment, a person with hiv can develop aids, which makes the immune system too weak to fight off disease. As the virus destroys and impairs the function of immune cells, infected individuals gradually become immunodeficient. Subject information oraquick advance rapid hiv12 antibody.
Odete ferreira e ricardo camacho 09h30 keynote lecture. Many species are infected by lentiviruses, which are characteristically responsible for longduration illnesses with a long incubation period. Mar 16, 2014 le sida, cette maladie incurable dont le vih en est le responsable est une veritable menace pour notre avenir. Oct 29, 2014 hiv is a virus that damages the immune system. Cette video vous donnera toutes les informations necessaires pour comprendre et. Virus da inmunodeficiencia humana wikipedia, a enciclopedia. By the third stage of hiv infection a persons immune system is severely damaged. Integration of the proviral dna finalises the hiv infection of the cell and the. Hepatitis a is caused by the hepatitis a virus hav.
The symptoms vary in type and severity from persontoperson. Hiv virology and pathogenetic mechanisms of infection. We have set ambitious targets for ending aids in our strategic plan results and start free stay free aidsfree frameworks, in which we play a global leadership role. Hivaids in the world today a summary of trends and. Without hiv treatment, your immune system can become weak and you can become sick with lifethreatening illnesses. Treating opportunistic infections among hivinfected. Immune function is typically measured by cd4 cell count.
Lentiviruses have many morphologies and biological properties in common. Infected women can pass the virus to their babies during pregnancy, childbirth, and breast feeding. Because the hiv virus develops to aids only after a period of several years, an hiv. Occupational risk of human immunodeficiency virus infection in healthcare workers. Hiv is a lifelong condition, and without treatment, a person with hiv can develop aids, which makes the. Transmission of hiv1 results in the establishment of a new infection, typically starting from a single virus particle. The disease is one of the most devastating epidemics in modern history.
Infeccio pel vih i sida viquipedia, lenciclopedia lliure. Hiv, virus replication, antigenic variation, virulence. The virus is found in the blood and other body fluids of infected individuals. Hiv is a member of the genus lentivirus, part of the family retroviridae. The human immunodeficiency virus hiv targets the immune system and weakens peoples defence systems against infections and some types of cancer. Otherwise, testing may lead to false negative results. Lutte contre le vihsida et les infections sexuellement transmissibles en france 2007 hiv1 2007 the biology of dendritic cells and hiv infection 2007. The human immunodeficiency virus hiv is grouped to the genus. The human immunodeficiency viruses hiv are two species of lentivirus a subgroup of.