Friday, December 2, 2022

Where Does The Disease Hiv Come From

Through Blood Transfusions Or Organ Transplants

Where Did HIV Come From?, Who’s Patient Zero for AIDS?, History of HIV/AIDS

Currently, HIV infection is rarely transmitted through blood transfusions or organ transplants.

Since 1985 in most developed countries, all blood collected for transfusion is tested for HIV, and when possible, some blood products are treated with heat to eliminate the risk of HIV infection. The current risk of HIV infection from a single blood transfusion is estimated to be less than 1 in about 2 million in the United States. However, in many developing countries, blood and blood products are not screened for HIV or are not screened as stringently. There, the risk remains substantial.

HIV has been transmitted when organs from infected donors were unknowingly used as transplants. HIV transmission is unlikely to occur when corneas or certain specially treated tissues are transplanted.

Strategies For Preventing The Transmission Of Hiv

  • Abstain from sexual activity.

  • Use a latex condom for each act of intercourse with an infected partner or a partner whose HIV status is unknown .

  • For men engaging in oral sex, withdraw before ejaculation.

  • For men, get circumcised .

  • For newly monogamous couples, get tested for HIV infection and other sexually transmitted diseases before engaging in unprotected sexual intercourse.

  • Never share needles or syringes.

  • Wear rubber gloves when touching body fluids of another person .

  • If accidentally exposed to fluids containing HIV , seek treatment with antiretroviral drugs to prevent infection.

Condoms made of latex provide good protection against HIV , but they are not foolproof. Oil-based lubricants should not be used because they may dissolve latex, reducing the condom’s effectiveness.

Other measures can help. For men, circumcision, an inexpensive, safe procedure, reduces the risk of becoming infected during vaginal intercourse with an infected woman by about half. Whether circumcision reduces the risk of HIV infection in other circumstances is unclear. Because circumcision provides only partial protection against HIV infection, people should also use other measures to prevent HIV infection. For example, if either partner has a sexually transmitted disease or HIV infection, it should be treated, and condoms should be used correctly and consistently.

First Human Hiv Infection

Infectious Knowledge

Actor Rock Hudson was the first major public figure known to have died of AIDS. Tennis great Arthur Ashe also died from transfusion-related AIDS. Ryan White, a 13-year-old hemophiliac with AIDS, who eventually died, became famous for his fight to attend school. And basketball superstar Magic Johnson, 10 years after he announced that he was HIV positive, is still living a healthy life with the disease.

A plasma sample taken in 1959 from an adult male living in the Democratic Republic of Congo was found to contain HIV. The virus was found in tissue samples from an African American teenager who died in St. Louis in 1969, and HIV was found in tissue samples from a Norwegian sailor who died around 1976. Many scientists believe that HIV was probably introduced into humans around the 1940s or the early 1950s, although it has been suggested that the first case may actually have occurred in the 1930s.

Excerpted from The Complete Idiot’s Guide to Dangerous Diseases and Epidemics 2002 by David Perlin, Ph.D., and Ann Cohen. All rights reserved including the right of reproduction in whole or in part in any form. Used by arrangement with Alpha Books, a member of Penguin Group Inc.

See also:

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Whats The Hiv Window Period

As soon as someone contracts HIV, it starts to reproduce in their body. The persons immune system reacts to the antigens by producing antibodies .

The time between exposure to HIV and when it becomes detectable in the blood is called the HIV window period. Most people develop detectable HIV antibodies within 23 to 90 days after transmission.

If a person takes an HIV test during the window period, its likely theyll receive a negative result. However, they can still transmit the virus to others during this time.

If someone thinks they may have been exposed to HIV but tested negative during this time, they should repeat the test in a few months to confirm . And during that time, they need to use condoms or other barrier methods to prevent possibly spreading HIV.

Someone who tests negative during the window might benefit from post-exposure prophylaxis . This is medication taken after an exposure to prevent getting HIV.

PEP needs to be taken as soon as possible after the exposure it should be taken no later than 72 hours after exposure but ideally before then.

Another way to prevent getting HIV is pre-exposure prophylaxis . A combination of HIV drugs taken before potential exposure to HIV, PrEP can lower the risk of contracting or transmitting HIV when taken consistently.

Timing is important when testing for HIV.

Prevention Of Hiv Infection

Where Did HIV Come From

At present, there is no effective HIV vaccine to prevent HIV infection or slow the progression of AIDS in people who are already infected. However, treating people who have HIV infection reduces the risk of their transmitting the infection to other people.

Transmission of HIV through its most common routessexual contact or sharing of needlesis almost completely preventable. However, the measures required for preventionsexual abstinence or consistent condom use Prevention Sexually transmitted diseases are infections that are typically, but not exclusively, passed from person to person through sexual contact. Sexually transmitted diseases may be caused… read more and access to clean needlesare sometimes personally or socially unpopular. Many people have difficulty changing their addictive or sexual behaviors, so they continue to put themselves at risk of HIV infection. Also, safe sex practices are not foolproof. For example, condoms can leak or break.

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What Are The Symptoms Of Kidney Disease

Kidney disease can advance very slowly. Slowly worsening kidney disease is called chronic kidney disease.

As kidney disease gets worse, a person may have swelling of the legs, feet, or ankles . Symptoms of advanced chronic kidney disease can include:

  • Increased or decreased urination
  • Feeling tired or having trouble sleeping
  • Nausea and vomiting
  • Itching or numbness

Blood and urine tests are used to detect kidney disease. Care for people with HIV includes testing for kidney disease.

Are There Other Theories About How The Virus Could Have Gotten Into Humans

There are several competing theories, ranging from implausible conspiracies to arguments grounded in extensive research. The best-known of the latter, the “OPV/AIDS” theory, was exhaustively detailed in the 1999 book The River, by author Edward Hooper. As many as a million Africans were given oral polio vaccines between 1957 and 1960. Hooper says witnesses have told him that a few batches of those vaccines were “grown” in chimp cells at a lab in Kisangani, a city in the Democratic Republic of the Congo — and that the chimp cells, and thus the vaccines, could have contained SIVs that jumped into humans. “There are highly significant correlations between the places where this vaccine was administered and the places where ⦠AIDS first appeared on the planet four to 20 years later,” Hooper says.

The majority of HIV researchers subscribe to the bushmeat theory and raise several arguments against the OPV theory. Hahn’s recent research confirming that HIV-1 M and N arose from Pan troglodytes troglodytes chimps in Cameroon presents one problem: The Kisangani lab is in the Democratic Republic of the Congo, and it’s home to a different subspecies of chimp than the one that was the source of HIV-1 M and N. However, it is possible that the chimps used in the Kisangani experiments were not from the area. In the spring of 2006, Hooper found a paper indicating that at least one of eight chimps at the Kisangani lab was a Pan troglodytes troglodytes.

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Living With Hiv: What To Expect And Tips For Coping

More than 1.2 million people in the United States are living with HIV. Its different for everybody, but with treatment, many can expect to live a long, productive life.

The most important thing is to start antiretroviral treatment as soon as possible. By taking medications exactly as prescribed, people living with HIV can keep their viral load low and their immune system strong.

Its also important to follow up with a healthcare provider regularly.

Other ways people living with HIV can improve their health include:

  • Make their health their top priority. Steps to help people living with HIV feel their best include:
  • fueling their body with a well-balanced diet
  • exercising regularly
  • avoiding tobacco and other drugs
  • reporting any new symptoms to their healthcare provider right away
  • Focus on their mental health. They could consider seeing a licensed therapist who is experienced in treating people with HIV.
  • Use safer sex practices. Talk to their sexual partner. Get tested for other STIs. And use condoms and other barrier methods every time they have vaginal or anal sex.
  • Talk to their healthcare provider about PrEP and PEP. When used consistently by a person without HIV, pre-exposure prophylaxis and post-exposure prophylaxis can lower the chances of transmission. PrEP is most often recommended for people without HIV in relationships with people with HIV, but it can be used in other situations as well. Online sources for finding a PrEP provider include PrEP Locator and PleasePrEPMe.
  • What Are The Causes Of Kidney Disease

    Origin of HIV, or Where Does HIV Come From?

    Diabetes and high blood pressure are the leading causes of kidney disease. Other factors that increase the risk of kidney disease include heart disease and a family history of kidney failure.

    A person’s risk of kidney disease increases as they get older. The longer a person has diabetes, high blood pressure, or heart disease, the greater their risk of kidney disease.

    The risk of kidney failure is especially high among African Americans, Hispanics, and American Indians, partially because these communities have high rates of diabetes and high blood pressure.

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    How Is Hpv Spread

    You can get HPV by having vaginal, anal, or oral sex with someone who has the virus. It is most commonly spread during vaginal or anal sex. HPV can be passed even when an infected person has no signs or symptoms.

    Anyone who is sexually active can get HPV, even if you have had sex with only one person. You also can develop symptoms years after you have sex with someone who is infected. This makes it hard to know when you first became infected.

    How Did Hiv Spread From Kinshasa

    The area around Kinshasa is full of transport links, such as roads, railways and rivers. The area also had a growing sex trade around the time that HIV began to spread. The high population of migrants and sex trade might explain how HIV spread along these infrastructure routes. By 1937, it had reached Brazzaville, about 120km west of Kinshasa.

    The lack of transport routes into the North and East of the country accounts for the significantly fewer reports of infections there at the time.11

    By 1980, half of all infections in DR Congo were in locations outside of the Kinshasa area, reflecting the growing epidemic.12

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    Origin And Distribution Of Sivgor

    HIV-1 origins. The phylogenetic relationships of representative SIVcpz, HIV-1, and SIVgor strains are shown for a region of the viral pol gene . SIVcpz and SIVgor sequences are shown in black and green, respectively. The four groups of HIV-1, each of which represents an independent cross-species transmission, are shown in different colors. Black circles indicate the four branches where cross-species transmission-to-humans has occurred. White circles indicate two possible alternative branches on which chimpanzee-to-gorilla transmission occurred. Brackets at the right denote SIVcpz from P. t. troglodytes and P. t. schweinfurthii , respectively. The phylogenetic tree was estimated using maximum likelihood methods . The scale bar represents 0.05 nucleotide substitutions per site.

    How Many New Hiv Infections Are There In Canada Each Year

    PPT

    According to national HIV estimates, there were 2,242 new HIV infections in Canada in 2018. This means that for every 100,000 Canadians, six people became HIV positive in 2018 .

    There was a small increase in the number of new HIV infections in 2018 compared with 2016, when there were an estimated 1,960 new HIV infections.

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    What Is The Treatment For Kidney Disease

    People with kidney disease can take steps to protect their kidneys from further damage. For example, many people with kidney disease take medicines to control high blood pressure. They may also reduce the amount of salt and protein in their diet to manage their kidney disease.

    Some people live with kidney disease for many years in others, kidney disease progresses to kidney failure. The treatments for kidney failure are dialysis and a kidney transplant. Both treatments take over the job of the failed kidneys.

    • There are two main types of dialysis. Like the kidneys, both types filter harmful waste and extra water out of the blood. In hemodialysis, a machine outside of the body is used to filter the blood. In peritoneal dialysis, the lining of the abdomen filters the blood inside the body.
    • A kidney transplant is surgery to place a healthy kidney from a donor into the body of a person with kidney failure. The donated kidney can be from a person who just died or from a living person.

    Both dialysis and a kidney transplant are used to treat kidney failure in people with HIV.

    Preventive Treatment After Exposure

    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 two or more drugs is currently recommended.

    Doctors and the person who was exposed typically decide together whether to use these preventive drugs. They base the decision on the estimated risk of infection and the possible side effects of the drugs. If they do not know whether the source is infected with HIV, they consider how likely the source is to be infected. However, even when the source of the exposure is known to be infected with HIV, the risk of infection after exposure varies, depending on the type of exposure. For example, risk from a blood splash is less than that from a needlestick.

    Immediately after exposure to HIV infection, what is done depends on the type of exposure:

    • If skin is exposed, it is cleaned with soap and water.

    • Puncture wounds are cleaned with antiseptic.

    • If mucous membranes are exposed, they are flushed with large amounts of water.

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    How Is Hiv Spread From Person To Person

    HIV can only be spread through specific activities. In the United States, the most common ways are:

    • Having vaginal or anal sex with someone who has HIV without using a condom or taking medicines to prevent or treat HIV. Anal sex is riskier than vaginal sex.
    • Sharing injection drug equipment , such as needles, with someone who has HIV.

    Less common ways are:

    • From mother to child during pregnancy, birth, or breastfeeding. However, the use of HIV medicines and other strategies have helped lower the risk of mother-to-child transmission of HIV to 1% or less in the United States.
    • Getting stuck with an HIV-contaminated needle or other sharp object. This is a risk mainly for health care workers. The risk is very low.

    HIV is spread only in extremely rare cases by:

    • Having oral sex. But in general, the chance that an HIV-negative person will get HIV from oral sex with an HIV-positive partner is extremely low.

    Early Symptoms Of Hiv

    Where did Aids come from?

    The first few weeks after someone contracts HIV is called the acute infection stage.

    During this time, the virus reproduces rapidly. The persons immune system responds by producing HIV antibodies, which are proteins that take measures to respond against infection.

    During this stage, some people have no symptoms at first. However, many people experience symptoms in the first month or so after contracting the virus, but they often dont realize HIV causes those symptoms.

    This is because symptoms of the acute stage can be very similar to those of the flu or other seasonal viruses, such as:

    • they may be mild to severe
    • they may come and go
    • they may last anywhere from a few days to several weeks

    Early symptoms of HIV can include:

    • fever
    • nausea
    • upset stomach

    Because these symptoms are similar to common illnesses like the flu, the person who has them might not think they need to see a healthcare provider.

    And even if they do, their healthcare provider might suspect the flu or mononucleosis and might not even consider HIV.

    Whether a person has symptoms or not, during this period their viral load is very high. The viral load is the amount of HIV found in the bloodstream.

    A high viral load means that HIV can be easily transmitted to someone else during this time.

    Initial HIV symptoms usually resolve within a few months as the person enters the chronic, or clinical latency, stage of HIV. This stage can last many years or even decades with treatment.

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    What Is The ‘four

    In 1983, the Centers for Disease Control in the United States listed the main at-risk groups, including partners of people with AIDS, people who inject drugs, haemophiliacs and people who have recently been to Haiti. At the time that cases of AIDS began to emerge in the USA, the absence of definitive information about HIV and its link to AIDS, inflated the panic and stigma surrounding the epidemic. Before long people began to talk colloquially of a 4-H Club at risk of AIDS: homosexuals, haemophiliacs, heroin addicts and Haitians, contributing to further stigmatisation.21

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