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Topic: HIV infection


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In the News (Fri 25 Jul 08)

  
  MedlinePlus Medical Encyclopedia: Acute HIV infection
Acute HIV infection is caused by the human immunodeficiency virus (HIV), a virus that gradually destroys the immune system.
Primary or acute HIV infection is a condition that occurs 2-4 weeks after infection with the human immunodeficiency virus (HIV).
After an infection with HIV, antibodies to the virus can be detected in the blood.
www.nlm.nih.gov /medlineplus/ency/article/000604.htm   (966 words)

  
 AEGiS-NIAID: HIV Infection and AIDS
HIV belongs to a subgroup of retroviruses known as lentiviruses, or “slow” viruses.
HIV proteins are critical to this process; for example, a protein encoded by the rev gene allows mRNA encoding HIV structural proteins to be transferred from the nucleus to the cytoplasm.
HIV also can be transmitted by contact with infected blood, most often by the sharing of needles or syringes contaminated with minute quantities of blood containing the virus.
www.aegis.com /topics/basics/hivandaids.html   (6133 words)

  
 What are the symptoms of HIV infection?
The symptoms of early infection can also be similar to the symptoms of other sexually transmitted diseases and other infections such as "mono" or hepatitis, which are much more commonly and more easily transmitted.
During the "window period" between the initial infection and the period in which antibodies are detectable (which can be from 2 weeks to 6 months, but is usually 3 months), standard HIV testing is ineffective.
If HIV infection is suspected, he or she may perform a Polymerase Chain Reaction (commonly called "PCR") test to determine whether HIV is present in the blood.
hivinsite.ucsf.edu /hiv?page=basics-00-02   (457 words)

  
 Circumcision Status, HIV Infection and AIDS
Ntozi recognizes that this idea that circumcision can reduce HIV infection is only a hypothesis, but would like to see a controlled study carried out to see if circumcision would reduce the tragic epidemic that continues to rage in Africa.
HIV infection and vaginal douching in central Africa.
HIV infection among youth in a South African mining town is associated with herpes simplex virus-2 seropositivity and sexual behaviour.
www.cirp.org /library/disease/HIV   (5738 words)

  
 HIV Infection and AIDS: An Overview, NIAID Fact Sheet
HIV is frequently spread among injection drug users by the sharing of needles or syringes contaminated with very small quantities of blood from someone infected with the virus.
HIV also can be spread to babies through the breast milk of mothers infected with the virus.
Babies born to mothers infected with HIV may or may not be infected with the virus, but all carry their mothers' antibodies to HIV for several months.
www.niaid.nih.gov /factsheets/hivinf.htm   (3123 words)

  
 HIV and AIDS
The human immunodeficiency virus known as HIV causes AIDS by infecting and damaging part of the body's defenses against infection, namely the white blood cells known as lymphocytes, a type of white blood cell in the body's immune (infection-fighting) system that is supposed to fight off invading germs.
HIV can be transmitted through direct contact with the blood or body fluid of someone who is infected with the virus.
HIV is transmitted through direct contact with the blood or body fluid of someone who is infected with the virus.
kidshealth.org /parent/infections/std/hiv.html   (3437 words)

  
 13 HIV
Although a test for HIV was developed and made widely available in the early to mid-1980s, the lack of available treatment until 1995, negative implications of treatment (including concerns about lack of confidentiality), and possible discrimination and stigmatization resulted in barriers to the reporting of HIV infection.
HIV infection rates appear to have stabilized since the early 1990s at about 40,000 new infections per year, which represents a slowing from growth rates experienced in the mid-1980s.
The objective to lower the risk of transfusion-transmitted HIV infection exceeded its target, and the objective to protect workers from exposure to bloodborne infections was met with the Occupational Safety and Health Administration’s bloodborne pathogens standard in December 1991.
www.healthypeople.gov /Document/HTML/Volume1/13HIV.htm   (5426 words)

  
 HIV Infection -- eCureMe.com
AIDS is caused by infection with the human immunodeficiency virus HIV-1.
HIV can be found in many types of bodily secretions (i.e., semen, urine, tears, saliva, blood, breast milk, spinal fluid, vaginal secretions).
HIV antibody test -- the HIV virus multiplies in the body for weeks or months before the body responds by making antibodies to it, at which time the HIV test is considered positive.
www.ecureme.com /emyhealth/data/HIV_Infection.asp   (598 words)

  
 Postgraduate Medicine: HIV/AIDS Symposium: Primary HIV infection
The period between acquisition of HIV and onset of symptoms is about 14 days (range, 5 to 30) (11), and the characteristic signs and symptoms range from a mild fever and sore throat to a severe mononucleosis-type syndrome with high spiking fevers and a measleslike rash.
In a well-characterized cohort of patients with acute and very early HIV infection (11), only 25% of those with symptoms (who had obtained HIV serologic testing at 6-month intervals or less) were given the correct diagnosis while undergoing evaluation for acute retroviral symptoms.
The acute retroviral syndrome and the pathogenesis of HIV-1 infection.
www.postgradmed.com /issues/1997/10_97/schacker.htm   (2923 words)

  
 AIDS and HIV
Too often, people at greatest risk of HIV infection do not know their high-risk behaviors can result in HIV infection, or they are reluctant or unable to change those high-risk behaviors.
To avoid infection through sex, the only sure way is not to have anal, vaginal or oral sexual intercourse or to have sex only with someone who is not infected and who has sex only with you.
HIV in blood from an infected person can remain in a needle, syringe or other item, then be injected directly into the bloodstream of the next user.
www.idph.state.il.us /public/hb/hbaids.htm   (838 words)

  
 HIV and AIDS
HIV can be transmitted from an infected person to another person through blood, semen (also known as "cum," the fluid released from the penis when a male ejaculates), vaginal fluids, and breast milk.
If a woman with HIV is pregnant, her newborn baby can catch the virus from her before birth, during the birthing process, or from breastfeeding.
Because their immune systems are weakened, people who have AIDS are unable to fight off many infections, particularly tuberculosis and other kinds of otherwise rare infections of the lung (such as Pneumocystis carinii pneumonia), the surface covering of the brain (meningitis), or the brain itself (encephalitis).
kidshealth.org /teen/sexual_health/stds/std_hiv.html   (1130 words)

  
 HIV Infection in Women, NIAID Fact Sheet
Because HIV is spread predominantly through sexual transmission, the development of chemical, biological, and physical barriers that can be used intravaginally or intrarectally to inactivate HIV and other sexually transmitted infection (STI) pathogens is critically important for controlling HIV infection.
Of the new HIV infections diagnosed among women in the United States in 2004, CDC estimated 70 percent were attributed to heterosexual contact and 28 percent to injection drug use.
Early diagnosis of HIV infection allows women to take full advantage of antiretroviral treatments and preventive medicines for opportunistic infections when their health care providers think it is appropriate.
www.niaid.nih.gov /factsheets/womenhiv.htm   (3786 words)

  
 eMedicine - HIV Infection and AIDS : Article by Jeff Dubin, MD   (Site not responding. Last check: 2007-09-10)
HIV has the capability to affect every organ system in the body by direct damage by the virus or by rendering the host susceptible to opportunistic infections.
HIV is transmitted primarily through sexual contact (over 70%); worldwide, it is more common in heterosexual men and women than in homosexual men.
Mortality/Morbidity: The course of HIV infection is characterized primarily by latency.
www.emedicine.com /emerg/topic253.htm   (3514 words)

  
 ACUTE HIV INFECTION
The number of HIV particles in the blood is much higher during acute HIV infection than later on.
Exposure to the blood of someone in the acute phase of infection is more likely to result in infection than exposure to someone with long-term infection.
One research study estimated that the risk of infection is approximately 20 times higher during acute infection.
www.aids.org /factSheets/103-Acute-HIV-Infection.html   (890 words)

  
 HIV Infection in Women -- familydoctor.org   (Site not responding. Last check: 2007-09-10)
HIV is spread through contact with blood, semen or other body fluids (except saliva) from a person infected with HIV.
In the early days of the AIDS epidemic, HIV infection appeared to be confined to certain groups, including intravenous drug users, men who have sex with other men and persons with hemophilia (a blood-clotting disease that requires treatment with frequent blood transfusions).
In general, the types of infections that people with HIV get, such as Pneumocystis pneumonia or Kaposi's sarcoma, and their treatments are the same in women and men.
familydoctor.org /225.xml   (1025 words)

  
 MedlinePlus Medical Encyclopedia: HIV infection
People with HIV infection need to receive education about the disease and treatment so that they can be active partners in decision making with their health care provider.
HIV is a chronic medical condition that can be treated, but not yet cured.
There is a slight risk of acquiring the infection even if "safe sex" is practiced with the use of condoms, due to the possibility of the condom breaking.
www.nlm.nih.gov /medlineplus/ency/article/000602.htm   (809 words)

  
 HIV and AIDS: Are You at Risk?- Divisions of HIV/AIDS Prevention - HIV/AIDS Brochures - CDC-NCHSTP
HIV - the human immunodeficiency virus - is a virus that kills your body’s "CD4 cells." CD4 cells (also called T-helper cells) help your body fight off infection and disease.
HIV can be passed from person to person if someone with HIV infection has sex with or shares drug injection needles with another person.
Although HIV is a very serious infection, many people with HIV and AIDS are living longer, healthier lives today, thanks to new and effective treatments.
www.cdc.gov /hiv/pubs/brochure/atrisk.htm   (1382 words)

  
 Life Cycle of HIV Infection   (Site not responding. Last check: 2007-09-10)
HIV begins its infection of a susceptible host cell by binding to the CD4 receptor on the host cell.
This ability of HIV to persist in certain latently infected cells is the major barrier to eradication or cure of HIV.
Unless the HIV lifecycle is interrupted by treatment, the virus infection spreads throughout the body and results in the destruction of the body's immune system.
hopkins-aids.edu /hiv_lifecycle/hivcycle_txt.html   (691 words)

  
 HIV and AIDS information on how HIV is transmitted at MedicineNet.com
Should patients with the "flu"- or "mono"-like illness of primary HIV infection be treated?
The patients were noted to have a severe reduction of a type of cell in the blood that is an important part of the immune system, called CD4 cells.
In 1985, a blood test became available that measures antibodies to HIV that are the body's immune response to the HIV.
www.medicinenet.com /human_immunodeficiency_virus_hiv_aids/article.htm   (551 words)

  
 HIV/AIDS - MayoClinic.com
The virus and the infection itself are known as HIV.
The term acquired immunodeficiency syndrome (AIDS) is used to mean the later stages of an HIV infection.
Worldwide, an estimated 38.6 million people are living with HIV, nearly half of them women and girls between the ages of 15 and 24.
www.mayoclinic.com /health/hiv-aids/DS00005   (325 words)

  
 Preventing HIV Infection: UNFPA
Recent evidence shows that sustained, intensive programmes in diverse settings are reducing HIV incidence through behaviour changes, such as increased use of condoms, delayed sexual initiation and fewer sexual partners.
As one of ten co-sponsors of UNAIDS, UNFPA works to intensify and scale up HIV prevention efforts using rights-based and evidence-informed strategies, including attention to the gender inequalities that add fuel to the epidemic.
UNFPA is also committed to the human rights of people living with HIV and works to widen their access to sexual and reproductive health care that meets their specific needs.
www.unfpa.org /hiv   (294 words)

  
 What Are The Symptoms Of HIV Infection And AIDS?
Most people newly infected with the HIV virus show few, if any, symptoms for a few years.
Usually, it takes about eight to nine years between the time of infection and the appearance of later symptoms, although this varies from person to person.
Not all people with HIV infection develop further symptoms.
www.ehealthmd.com /library/aids/ADS_symptoms.html   (392 words)

  
 WHO | HIV infections
- AIDS and sexually transmitted infections (Region of the Americas - PAHO)
- HIV infections and surveillance (Western Pacific Region)
- Q&A: How will WHO's antiretroviral treatment guidelines improve HIV treatment for children?
www.who.int /health_topics/hiv_infections/en   (166 words)

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