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   HIV / AIDS
  World AIDS Day 2012
  World AIDS Day 2011
  World AIDS Day 2010
  Transmission of HIV Virus
  AIDS Symptoms
  Early HIV Virus Progression
  Late HIV Illness
  WHO disease staging system for HIV infection
  HIV Test
  Prevention
  Treatment
  Stigma


  HIV / AIDS

  AIDS sysmbol         AID ribbon

  As of January 2006, the Joint United Nations Programme on HIV/AIDS (UNAIDS) and the World's Health Organization (WHO) estimate that AIDS has killed more than 25 million people since it was first recognized on December 1, 1981, making it one of the most destructive epidemics in recorded history. In 2005 alone, AIDS claimed an estimated 2.4 - 3.3 million lives, of which more than 570,000 were children.  A third of these deaths are occurring in sub-Saharan Africa, retarding economic growth by destroying human capital. Antiretroviral treatment reduces both the mortality and the morbidity of HIV infection, but routine access to antiretroviral medication is not available in all countries.  HIV/AIDS stigma is more severe than that associated with other life-threatening conditions and extends beyond the disease itself to providers and even volunteers involved with the care of people living with HIV. 
  AIDS
  Acquired immunodeficiency syndrome or Acquired immune deficiency syndrome (AIDS or Aids) is a collection of symptoms and infections in humans resulting from the specific damage to the immune system caused by infection with the human immunodeficiency virus (HIV).
  HIV
 HIV is a retrovirus that primarily infects vital components of the human immune system such as CD4+ T cells, macrophages and dendritic cells. It directly and indirectly destroys CD4+ T cells. CD4+ T cells are required for the proper functioning of the immune system. When HIV kills CD4+ T cells so that there are fewer than 200 CD4+ T cells per micro liter of blood, cellular immunity is lost, leading to AIDS. Acute HIV infection progresses over time to clinical latent HIV infection and then to early symptomatic HIV infection and later, to AIDS, which is identified on the basis of the amount of CD4+ T cells in the blood and the presence of certain infections.

     

  World's AIDS Day 2012

  World AIDS Day 2012 was observed on December 1 this year, to reflect on the impact of HIV, the lives saved, and the lives lost and with a new call to action – "Getting to Zero."  Worldwide, there are currently 34 million people living with HIV/AIDS. The Centers for Disease Control and Prevention (CDC) estimates that more than 1.1 million Americans are currently living with HIV and 48,100 new HIV cases occur each year in the U.S.
  

  World's AIDS Day 2011

  World AIDS Day, observed December 1 each year, is dedicated to raising awareness of the AIDS pandemic caused by the spread of HIV infection. World AIDS Day has become a time to reflect on the obstacles we face in the  fight against HIV and AIDS. According to latest statistics from UNAIDS, 33.3 million people are battling HIV worldwide, of which 2.5 million are children.. Although huge strides have been made over the past two decades, we are, in many respects, continuing to lose ground as new infections outpace our ability to deliver treatment. Despite nearly a quarter of a century of treatment and research, nearly two million die from AIDS every year. 
  This year the theme of World AIDS Day 2011 is "Getting to Zero," which essentially means Zero New HIV Infections, Zero Discrimination and Zero AIDS Related Deaths. The main goal of World AIDS Day 2011 is to focus on "Zero AIDS Related Deaths"  with renewed thrust on universal access to treatment. 
   Vision for World AIDS Day 2011-2015  
   *  50 % reduction in sexual transmission of HIV among youth, homosexuals, and sex workers
   * To completely eliminate vertical transmission of HIV and reduce AIDS-related maternal deaths by 50%.
   * Prevention of HIV infections among drug users
   * To step up access to antiretroviral therapy for those living with HIV
   * 50% reduction in TB related deaths among people living with HIV
   * Access to essential care and support for people living with HIV and households affected by HIV
   * Better focus on HIV-specific needs of women and girls

  World's AIDS Day 2010

  For each World AIDS day from 2005 to 2010, the theme chosen is “stop AIDS; keep the promise” with a yearly sub theme. WHO  on December 1, 2010 said that HIV/AIDS is still a serious public health problem. Children are the most vulnerable group, with such cases having increased by 46 per cent between 2001 and 2009, WHO said. Globally, an estimated 33.3 million people live with the virus, and 2.6 million were infected in 2009. About 2.3 million people live with AIDS in India
  Use protection and spread awareness, suggested a few Bollywood celebrities on World AIDS Day on December 1, 2010. "On World Aids Day I want to appeal to you all today not to fear HIV.Just be safe, use protection and do not stigmatise people living with HIV," actress Preity Zinta posted on her Twitter page.

 Transmission of HIV Virus

  Transmission of the virus occurs:
 Through sexual contact -- including oral, vaginal, and anal sex 
 Through blood -- via blood transfusions  or needle sharing 
 From mother to child -- a pregnant woman can transmit the virus to her fetus through their shared blood circulation, or a nursing mother can transmit it to her baby in her milk 
  1. Sexual transmission: The majority of HIV infections are acquired through unprotected sexual relations between partners, one of whom has HIV. Sexual transmission occurs with the contact between sexual secretions of one partner with the rectal, genital or oral mucous membranes of another. Unprotected receptive sexual acts are riskier  than unprotected insertive sexual acts, with the risk for transmitting HIV from an infected partner to an uninfected partner through unprotected insertive anal intercourse greater than the risk for transmission through vaginal intercourse or oral sex. Oral sex is not without its risks as HIV is transmissible through both insertive and receptive oral sex. The risk of HIV transmission from exposure to saliva is considerably smaller than the risk from exposure to semen; contrary to popular belief. Sexually transmitted infections (STI) increase the risk of HIV transmission and infection because they cause the disruption of the normal epithelial barrier by genital ulceration and/or microulceration; and by accumulation of pools of HIV-susceptible or HIV- infected cells (lymphocytes and macrophages)in semen and vaginal secretions.
  2. Mother-to-child transmission (MTCT): The transmission of the virus from the mother to the child can occur in utero during the last weeks of pregnancy and at childbirth. In the absence of treatment, the transmission rate between the mother to the child during pregnancy, labor and delivery is 25%. However, when the mother has access to antiretroviral therapy and gives birth by caesarean section, the rate of transmission is just 1%.  A number of factors influence the risk of infection, particularly the viral load of the mother at birth (the higher the load, the higher the risk). Breastfeeding increases the risk of transmission by 10–15%. This risk depends on clinical factors and may vary according to the pattern and duration of breast-feeding. 
  3 Through Blood:  HIV can be transmitted to a person receiving blood or organs from an infected  donor. Sharing and reusing syringes contaminated with HIV-infected blood represents a major risk for infection with not only HIV, but also hepatitis B and hepatitis C. Needle sharing is the cause of one third of all new HIV-infections and 50% of hepatitis C infections in Northern America, China, and Eastern Europe. The risk of being infected with HIV from a single prick with a needle that has been used on an HIV infected person though is thought to be about 1 in 150. However, according to the WHO, the overwhelming majority of the world population does not have access to safe blood and "between 5% and 10% of HIV infections worldwide are transmitted through the transfusion of infected blood and blood products".

 

  AIDS Symptoms

  HIV virus causing AIDS enters the blood and quickly penetrates white cells. Then they program the white cells, after which there is often little or no trace of the AIDS virus at all. This situation usually lasts for six to twelve weeks. During this time the person is free of HIV or AIDS symptoms and antibody tests for AIDS and HIV are negative. 
First Symptoms of AIDS Illness (HIV Infection):  First thing that starts developing in a flu like illness, which may look like glandular fever with swollen glands in the neck and armpits. At this stage the blood test will usually become positive as it picks up the tell-tale antibodies. Most people do not realise what is happening, although when they later develop AIDS they look back and remember it clearly. Most people have produced antibodies in about twelve weeks. 
Latent infection:  The person in this stage has a positive HIV test. The virus often seems to disappear completely from the blood again. At least nine out of ten who see these HIV and AIDS symptoms will develop further problems. Without use of the latest therapies:50% with HIV develop AIDS in ten years, 70% with HIV develop AIDS in fourteen years. Of those with AIDS, 94% are dead in five years 
  The next HIV AIDS symptoms stage begins when the immune ystem starts to break down. This is often preceded by subtle mutations in the virus, during which it becomes more aggressive in damaging white cells. Several glands in the neck and armpits may swell and remain swollen for more than three months without any explanation. This is known as persistent generalised lymphadenopathy (PGL). 

 Early HIV Virus Progression

  As the HIV disease progresses, the person starts showing up other AIDS symptoms. A simple boil or warts may spread all over the body. The mouth may become infected by thrush (thick white coating), or may develop some other problem. Dentists are often the first to be in a position to make the diagnosis. People may develop severe shingles (painful blisters in a band of red skin), or herpes. They may feel overwhelmingly tired all the time, have high temperatures, drenching night sweats, lose more than 10% of their body weight, and have diarrhoea lasting more than a month. No other cause is found and a blood test will usually be positive. Some used to call this stage ARC, or AIDS related complex. 

  Late HIV Illness

  The AIDS Symptoms: The final stage is AIDS. Most of the immune system is intact and the body can deal with most infections, but one or two more unusual infections become almost impossible for the body to get rid of without medical help, usually intensive antibiotics. These infections can be a nightmare for doctors and patients. The desperate struggle is to find the new germ, identify it, and give the right drug in huge doses to kill it. The germ may be hiding deep in a lung requiring a tube (bronchoscope) to be put down the windpipe into the lung to get a sample. The person is sedated for this. It may be hiding in the fluid covering the brain and spinal cord, requiring a needle to be put into the spine (lumbar puncture). It may be hiding in the brain itself. It may hide in the liver or gall-bladder or bowel. It can hide anywhere. 

  WHO disease staging system for HIV infection

  In 1990, the World Health Organization (WHO) grouped these infections and conditions together by introducing a staging system for patients infected with HIV-1. An update took place in September 2005. Most of these conditions are  opportunistic infections that are easily treatable in healthy people.
Stage I:  HIV disease is asymptomatic and not categorized as AIDS
Stage II: includes minor mucocutaneous manifestations and recurrent upper respiratory tract infections
Stage III: includes unexplained chronic diarrhea for longer than a month, severe bacterial infections and pulmonary tuberculosis
Stage IV: includes toxoplasmosis of the brain, candidiasis of the esophagus, trachea, bronchi or lungs and Kaposis sarcoma; these diseases are indicators of AIDS.

  HIV Test

  Approximately half of those infected with HIV do not know their HIV status until an AIDS diagnosis is made with an HIV test. Donor blood and blood products used in medicine and medical research are screened for HIV using such a test. Typical HIV tests, including the HIV enzyme immunoassay and the Western blot assay, detect HIV antibodies in serum, plasma, oral fluid, dried blood spot or urine of patients. However, the window period (the time between initial infection and the development of detectable antibodies against the infection) can vary. This is why it can take 6-12 months to seroconvert and test positive. Commercially available tests to detect other HIV antigens, HIV-RNA, and HIV-DNA in order to detect HIV infection prior to the development of detectable antibodies are available. For the diagnosis of HIV infection these assays are not specifically approved, but are nonetheless routinely used in developed countries.

 Prevention

 During a sexual act, only male or female condoms can reduce the chances of infection with HIV and other STDs and the chances of becoming pregnant. The best evidence to date indicates that condom use reduces the risk of heterosexual HIV transmission by approximately 80%. The male latex condom, if used correctly without oil-based lubricants, is the single most efficient available technology to reduce the sexual transmission of HIV and other sexually transmitted infections.
  Medical workers who follow universal precautions or body substance isolation such as wearing latex gloves when giving injections and washing the hands frequently can help prevent infection of HIV. 
   All AIDS-prevention organizations advise drug-users not to share needles and other material required to prepare and take drugs (including syringes, cotton balls, the spoons, water for diluting the drug, straws, crack pipes, etc). It is important that people use new or properly sterilized needles for each injection. Information on cleaning needles using bleach is available from health care and addiction professionals and from needle exchanges. Many nations have decriminalized needle possession and made it possible to buy injection equipment from pharmacists without a prescription.

  Treatment

There is currently no vaccine against HIV or AIDS, the only known methods of prevention are based on avoiding exposure to the virus or, failing that, on antiviral treatment directly after a highly significant exposure. Also, not a single case has been documented in which systemic HIV infection has been cured and even on the theoretical level, no plausible way of eradicating HIV infection has so far been found. Treatment for HIV can suppress viral replication to a degree sufficient to apparently stop disease progression, but success is critically dependent on the patients ability to keep perfect adherence to their drug schedule, which many people will fail to achieve. Also, modern combination therapy has been around for merely ten years, so it is not presently known whether treatment failure or inacceptable long-term side effects can be avoided in the majority even of perfectly compliant patients over a time-span of  potentially many decades. However, it is known that without major medical and scientific breakthroughs, HIV will not have any problem surviving combination therapy for said decades. Still, in western countries, most patients survive many years following diagnosis because of the availability of the highly active antiretroviral therapy (HAART).  In the absence of HAART, progression from HIV infection to AIDS occurs at a median of between nine to ten years and the median survival time after developing AIDS is only 9.2 months.  HAART dramatically increases the time from diagnosis to death, and treatment research continues. Current optimal HAART options consist of combinations (or "cocktails") consisting of at least three drugs belonging to at least two types, or  "classes," of anti-retroviral agents. Typical regimens consist of two nucleoside analogue reverse transcriptase inhibitors (NRTIs) plus either a protease inhibitor or a non-nucleoside reverse transcriptase inhibitor (NNRTI). This treatment is frequently referred to as HAART (highly-active anti-retroviral therapy).  
   Anti-retroviral treatments, along with medications intended to prevent AIDS-related opportunistic infections, have played a part in delaying complications associated with AIDS, reducing the symptoms of HIV infection, and extending patients life spans. Over the past decade the success of these treatments in prolonging and improving the quality of life for people with AIDS has improved dramatically. 
   Various forms of alternative medicine have been used to try to treat symptoms or to try to affect the course of the disease itself, although none are a substitute for conventional treatment. 

  Stigma

  AIDS stigma exists around the world in a variety of ways, including ostracism, rejection, discrimination and avoidance of HIV infected people; compulsory HIV testing without prior consent or protection of confidentiality; violence against HIV infected individuals or people who are perceived to be infected with HIV. Often, AIDS stigma is expressed in conjunction with one or more other stigmas, particularly those associated with homosexuality, bisexuality, and intravenous drug use, and the quarantine of HIV infected individuals. Those most likely to hold misconceptions about HIV transmission and to harbor HIV/AIDS stigma are people with high levels of religiosity, conservative political ideology and less educated people.
   Ban Ki-moon, Secretary-General of the United Nations  said, "Stigma remains the single most important barrier to public action. It is a main reason why too many people are afraid to see a doctor to determine whether they have the disease, or to seek treatment if so. It helps make AIDS the silent killer, because people fear the social disgrace of speaking about it, or taking easily available precautions. Stigma is a chief reason why the AIDS epidemic continues to devastate societies around the world. We can fight stigma. Enlightened laws and policies are key. But it begins
with openness, the courage to speak out. Schools should teach respect and understanding. Religious leaders should preach tolerance. The media should condemn prejudice and use its influence to advance social change, from securing legal protections to ensuring access to health care."

   Aishwarya Rai
  Aishwarya Rai Bachchan has been conferred with the honor of being the Goodwill Ambassador for UNAIDS. on September 25, 2012. The agency aims to use her services to educate young women and eradicate new HIV infections by 2015. This is the first big global assignment that the former beauty queen has signed up for, since she became a mother.


     AIDS ribon
  Statistics  from UNAIDS
  * According to latest statistics from UNAIDS, 33.3 million people are battling HIV worldwide, of which 2.5 million are children.
  *  Majority of HIV victims belong to lower and middle-income countries.
  * 50% of victims are youth; statistics show that most do not live beyond 10 years following diagnosis.
  * 2.5 million HIV+ individuals reside in India and Tamilnadu is home to about 1.7 lakh victims.
  *  Despite the awareness about protection before sex, 60% female sex workers in China do not use condoms with clients.
 *  Education about HIV-AIDS is imperative as nearly one in three people escape diagnosis of the condition.
  
 WHO Progress Report on HIV/AIDS
  According to the WHO Progress Report on HIV/AIDS in South-East Asia 2011, an estimated 3.5 million people were living with HIV/AIDS in 2010, including 140,000 children. Women accounted for 37 per cent of this population. Between 2001 and 2010, the number of people newly infected with HIV declined sharply by 34 percent in South-East Asia that includes India, Pakistan , Bangladesh, Sri Lanka and Nepal, among others.
According to the WHO, with the expansion of facilities providing testing
and counselling services, approximately 16 million people have been tested for HIV across the region.

  Road to AIDS 2012
  2012 International AIDS Conference will be held next summer in Washington, D.C. The meeting hasn’t been to the United States since 1990 and returned thanks to the Obama Administration lifting the ban on HIV- positive people visiting the country.

 

  

 
 
 
 
 
 
 
 
 
 

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