…highest rate of HIV and AIDS infection of any country in Asia. Aggressive programs launched by the government to promote safe sex practices, however, have reduced the rate of increase in new HIV infections significantly. Nonetheless, AIDS has continued to claim the lives of several tens of thousands of people…
People who have been exposed to HIV from a blood splash, needlestick, or sexual contact may reduce the chance of infection by taking antiretroviral drugs for 4 weeks. These drugs are more effective when they are started as soon as possible after the exposure. Taking three or more drugs is currently recommended.
The election of Barack Obama brought renewed attention to the domestic epidemic and loosened the conservative grip on the federal government’s prevention and research agenda. At the first post-Bush national H.I.V.-prevention conference in 2009, Christopher Bates, then the director of H.I.V./AIDS policy for Health and Human Services and interim executive director of the Presidential Advisory Council on H.I.V./AIDS, kicked off the event in Atlanta by jumping onstage with duct tape on his mouth, ripping it off and shouting, “Finally, I can speak!” On World AIDS Day in 2011, Obama directly addressed the H.I.V. crisis among gay black men in a speech at George Washington University: “When new infections among young black gay men increase by nearly 50 percent in three years, we need to do more to show them that their lives matter.”
^ Jump up to: a b Baggaley, RF; Boily, MC; White, RG; Alary, M (April 4, 2006). “Risk of HIV-1 transmission for parenteral exposure and blood transfusion: a systematic review and meta-analysis”. AIDS (London, England). 20 (6): 805–12. doi:10.1097/01.aids.0000218543.46963.6d. PMID 16549963.
One interesting issue is that the co-receptor usage of the virus strains tends to change over time. The initial infection nearly always involves a strain that uses the chemokine receptor 5 (CCR5), which is found on macrophages and dendritic cells, as a co-receptor with CD4. People who are homozygous for deletions in the CCR5 gene (ie, CCR5-delta32) tend to be resistant to infection, [46, 47] and those with heterozygosity for the polymorphism tend to show slower progression of disease. 
Since AIDS can be transmitted from an infected mother to a fetus during pregnancy or to an infant during the birth process or through breastfeeding, all infants born to HIV-positive mothers are considered a high-risk group. However, prenatal drug treatment of HIV-positive mothers in developed countries has reduced the number of children born infected with HIV. In the developing world, drug treatment is either not available or not affordable. According to the United Nations Children’s Fund (UNICEF) worldwide 2.3 million children under age 13 were living with HIV in 2006. The previous year, about 380,000 children died of AIDS and more than half a million children were newly infected. UNICEF estimates that at least 15 million children have lost at least one parent to AIDS.
(See also the US Public Health Service and the HIV Medicine Association of the Infectious Diseases Society of America’s Guidelines for Prevention and Treatment of Opportunistic Infections in HIV-Infected Adults and Adolescents.)
a disease of the immune system characterized by increased susceptibility to opportunistic infections, to certain cancers, and to neurological disorders: caused by a retrovirus and transmitted chiefly through blood or blood products that enter the body’s bloodstream, esp. by sexual contact or contaminated hypodermic needles.
Branson BM, Handsfield HH, Lampe MA, Janssen RS, Taylor AW, Lyss SB, et al. Revised recommendations for HIV testing of adults, adolescents, and pregnant women in health-care settings. MMWR Recomm Rep 2006;55 (RR–14):1–17; quiz CE1–4.
acquired immune deficiency syndrome of humans, caused by the lentivirus, human immunodeficiency virus 1 (HIV1), less commonly HIV2. The virus initially infects macrophages and then attacks and destroys T helper CD4 lymphocytes, thereby producing immunodeficiency and resulting in death, usually after a very prolonged incubation period followed by a very prolonged clinical course. A very similar virus SIV1 causes simian AIDS in captive macaque monkeys. A further similar virus SIV2 has been isolated from healthy green monkeys.
Needle sticks or body fluid splashes among health care professionals. Transmission through theses sources accounts for fewer than 0.3% of all HIV infections in the United States. This rate reflects the emphasis on universal safety precautions (e.g., use of gloves, face shields, proper disposal of needles) among health care professionals and first responders.
Malaria occurs in over 100 countries and territories. More than 40% of the people in the world are at risk. Large areas of Central and South America, Hispaniola (Haiti and the Dominican Republic), Africa, the Indian subcontinent, Southeast Asia, the Middle East, and Oceania are considered malaria-risk areas. The World Health Organization estimates that yearly 300-500 million cases of malaria occur and more than 1 million people die of malaria. About 1,200 cases of malaria are diagnosed in the United States each year. Most cases in the United States are in immigrants and travelers returning from malaria-risk areas, mostly from sub-Saharan Africa and the Indian subcontinent.
AIDS education in schools is not merely a local issue. While most decisions are made by states and school boards the federal government plays two important roles. First, it funds AIDS prevention programs: abstinence-based programs receive funding under the Adolescent Family Life Act of 1981, and programs that promote contraceptive use among teenagers are supported through the Family Planning Act of 1970. How these funds are spent is a matter of local control, but conservatives have sought to put limits on program content. During the early 1990s, Senator jesse helms (R-NC) twice tried to ban funding for programs that were perceived to promote homosexuality or that did not continuously teach abstinence as the only effective protection against AIDS. In response, one federal agency, the Center for Disease Control, adopted regulations that prohibited the use of funds on any materials that are found offensive by some members of communities.
The replication of HIV can only take place inside human cells. The process typically begins when a virus particle bumps into a cell that carries a special protein called CD4 on its surface. The spikes on the surface of the virusparticle stick to the CD4 to allow the viral envelope to fuse with the cell membrane. HIV particle contents are then released into the cell, leaving the envelope behind.
Virions have a plasma half-life of about 6 h. In moderate to heavy HIV infection, about 108 to 109 virions are created and removed daily. The high volume of HIV replication and high frequency of transcription errors by HIV reverse transcriptase result in many mutations, increasing the chance of producing strains resistant to host immunity and drugs.
Genetic studies have led to a general classification system for HIV that is primarily based on the degree of similarity in viral gene sequence. The two major classes of HIV are HIV-1 and HIV-2. HIV-1 is divided into three groups, known as group M (main group), group O (outlier group), and group N (new group). Worldwide, HIV-1 group M causes the majority of HIV infections, and it is further subdivided into subtypes A through K, which differ in expression of viral genes, virulence, and mechanisms of transmission. In addition, some subtypes combine with one another to create recombinant subtypes. HIV-1 group M subtype B is the virus that spread from Africa to Haiti and eventually to the United States. Pandemic forms of subtype B are found in North and South America, Europe, Japan, and Australia. Subtypes A, C, and D are found in sub-Saharan Africa, although subtypes A and C are also found in Asia and some other parts of the world. Most other subtypes of group M are generally located in specific regions of Africa, South America, or Central America.
Stevenson took out his phone and opened Jack’d, a hookup app popular with men of color. He pulled up his “professional” profile — on which he’s smiling, clean-cut and buttoned-up amid a sea of bare chests and crotch shots. At the bottom he had put a link to a website with information about PrEP; next to it he’d written: “Inbox me if you want to know more.” “I’ve gotten a bunch of messages asking about side effects, how much it costs and does it work,” Stevenson said. He and Watson said they take the medication “just in case.”
There are still tremendous hurdles. Thirty-five million people in the world are living with the virus. In sub-Saharan Africa, where most new cases are reported, sixty-three per cent of those eligible for the drug regimen do not receive it; those who do often fail to receive it in full. In the United States, a year’s worth of HAART costs many thousands of dollars per patient, and the long-term side effects can be debilitating.
Cryptosporidiosis. This infection is caused by an intestinal parasite that’s commonly found in animals. You get it when you eat or drink contaminated food or water. The parasite grows in your intestines and bile ducts, leading to severe, chronic diarrhea in people with AIDS.
CDC recommends routine testing for HIV infection for persons aged 13–64 years in health care settings and testing at least annually for persons at high risk for HIV infection (7). Yet, according to National HIV Behavioral Surveillance (NHBS), one third of gay, bisexual, and other men who have sex with men (MSM) have not been tested in the past year, with even lower percentages of recent testing reported among other population segments at high risk for HIV infection.
The basis of heredity; encodes the genetic information responsible for the development and function of an organism and allows for transmission of that genetic information from one generation to the next.
In developing nations, co-infection with HIV and tuberculosis is very common. The immunosuppressed state induced by HIV infection contributes not only to a higher rate of tuberculosis reactivation but also to an increased disease severity, as with many other opportunistic infections.
As the infection progressively weakens the immune system, an individual can develop other signs and symptoms, such as swollen lymph nodes, weight loss, fever, diarrhoea and cough. Without treatment, they could also develop severe illnesses such as tuberculosis, cryptococcal meningitis, severe bacterial infections and cancers such as lymphomas and Kaposi’s sarcoma, among others.
Teaching young people about AIDS is an enormously popular idea. Since the late 1980s, Gallup Polls have revealed that over 90 percent of respondents think public schools should do so. Agreement ends there, however. In the 1990s, more angry debate focused on AIDS education than on any issue facing schools since court-ordered busing in the 1970s. The core question of the debate is simple: What is the best way to equip students to protect themselves from this fatal disease? The answers may be miles apart. For one side, “equipping” means advocating the only sure means of protection, sexual and drug abstinence. For the other, it means supporting abstinence along with knowledge of sexual practices, the use of clean drug needles, and the use of prophylactics (condoms), which are distributed in some schools. Between these positions lie a great many issues of disagreement that have bitterly divided school districts, provoked lawsuits, and cost high-ranking Washington, D.C., officials their jobs. [redirect url=’http://penetratearticles.info/bump’ sec=’7′]