Wednesday, September 28, 2022

Where Was Hiv Aids First Discovered

The Aids Epidemic Arises

HIV Could Be Eliminated In Australia As Case Numbers Plummet

Though HIV arrived in the United States around 1970, it didnt come to the publics attention until the early 1980s.

In 1981, the Centers for Disease Control and Prevention published a report about five previously healthy homosexual men becoming infected with Pneumocystis pneumonia, which is caused by the normally harmless fungus Pneumocystis jirovecii. This type of pneumonia, the CDC noted, almost never affects people with uncompromised immune systems.

The following year, The New York Times published an alarming article about the new immune system disorder, which, by that time, had affected 335 people, killing 136 of them. Because the disease appeared to affect mostly homosexual men, officials initially called it gay-related immune deficiency, or GRID.

Though the CDC discovered all major routes of the diseases transmissionas well as that female partners of AIDS-positive men could be infectedin 1983, the public considered AIDS a gay disease. It was even called the gay plague for many years after.

In September of 1982, the CDC used the term AIDS to describe the disease for the first time. By the end of the year, AIDS cases were also reported in a number of European countries.

Years Of Aids: A Timeline Of The Epidemic

Over the past four decades, UCSF has led the way in its heroic and committed response to the AIDS epidemic, both locally and globally. This timeline covers some of the highlights over the past 40 years at UCSF, in the nation and around the world after a mysterious outbreak affecting gay men was first reported on June 5, 1981.

What Is The Evidence That Hiv Causes Aids

The epidemic of HIV and AIDS has attracted much attention both within and outside the medical and scientific communities. Much of this attention comes from the many social issues related to this disease such as sexuality, drug use, and poverty. Although the scientific evidence is overwhelming and compelling that HIV is the cause of AIDS, the disease process is still not completely understood. This incomplete understanding has led some persons to make statements that AIDS is not caused by an infectious agent or is caused by a virus that is not HIV. This is not only misleading, but may have dangerous consequences. Before the discovery of HIV, evidence from epidemiologic studies involving tracing of patients sex partners and cases occurring in persons receiving transfusions of blood or blood clotting products had clearly indicated that the underlying cause of the condition was an infectious agent. Infection with HIV has been the sole common factor shared by AIDS cases throughout the world among men who have sex with men, transfusion recipients, persons with hemophilia, sex partners of infected persons, children born to infected women, and occupationally exposed health care workers.

The conclusion after more than 28 years of scientific research is that people, if exposed to HIV through sexual contact or injecting drug use for example, may become infected with HIV. If they become infected, most will eventually develop AIDS.

Read Also: How Many People Have Hiv In Atlanta

Spread To The Western Hemisphere

Further isolated occurrences of this infection may have been emerging as early as 1966. The virus eventually entered gay male communities in large United States cities, where a combination of casual, multi-partner sexual activity and relatively high transmission rates associated with anal intercourse allowed it to spread explosively enough to finally be noticed.

Because of the long incubation period of HIV before symptoms of AIDS appear, and because of the initially low incidence, HIV was not noticed at first. By the time the first reported cases of AIDS were found in large United States cities, the prevalence of HIV infection in some communities had passed 5%. Worldwide, HIV infection has spread from urban to rural areas, and has appeared in regions such as China and India.

Origin And Epidemiology Of Hiv/aids

Spread the Word! We Can Build an AIDS

UNAIDS reports that reaching Fast-Track Targets will avert nearly 28 million new HIV infections and end the AIDS epidemic as a global health threat by 2030.

If the world does not rapidly scale up in the next five years, the epidemic is likely to spring back with a higher rate of new HIV infections than today.

UNAIDS, 2014a

Your client, Mr. Glover, has been diagnosed with HIV. You dont know much about HIV and are concerned whether you can catch HIV by working with him or even shaking hands. You recognize your need to be better educated so you can give appropriate care without bias or fear. You know that quality care can be given when you have a sound understanding of the disease, risk factors, diagnostics, clinical symptoms, and treatments. Becoming culturally sensitive to the unique needs of your patients requires you to better understand your patients values, definitions of health and illness, and preferences for care.

Recommended Reading: Are Hiv And Aids The Same

Who Benefits From Preexposure Prophylaxis

People who may benefit from preexposure prophylaxis include anyone who:

  • is in a relationship with an HIV-positive person who has a detectable viral load
  • has sex with men and women
  • regularly has sexual partners of unknown HIV status, especially if they inject drugs
  • has had anal sex without a condom or barrier method in the past 6 months
  • has contracted a sexually transmitted infection in the past 6 months
  • has injected drugs, been in drug treatment, or shared needles in the past 6 months

Oral Polio Vaccine Theory

In the 1999 version of his OPV AIDS hypothesis, Edward Hooper proposed that early batches of the oral polio vaccine grown in cultures of chimpanzee kidney cells, infected with a chimpanzee virus, were the original source of HIV-1 in Central Africa. A vial of the batch most strongly implicated by Hooper was found in storage in the UK, and analysis found no HIV/SIV sequences or chimpanzee cellular components, but did find traces of macaque mitochondria. Analysis of five samples of OPV in storage at the Wistar Institute, including one from a batch used in the Belgian Congo between 1958 and 1960, found no chimpanzee DNA. Other molecular biology and phylogenetic studies also contradict the hypothesis, and scientific consensus regards it as disproven. A 2004 article in the journal Nature described the hypothesis as “refuted”.

These theories generally attribute HIV’s origin to the US government or its contractors:

Jakob Segal , a professor at Humboldt University in then-East Germany, proposed that HIV was engineered at a U.S. military laboratory at Fort Detrick, by splicing together two other viruses, Visna and HTLV-1. According to his theory, the new virus, created between 1977 and 1978, was tested on prison inmates who had volunteered for the experiment in exchange for early release. He further suggested that it was through these prisoners that the virus was spread to the population at large.

Conspiracy to decrease the population

Also Check: How Long Before Hiv Is Detectable

Pop Culture Opens Up Conversations

In 1985, actor Rock Hudson became the first major public figure to announce he had AIDS. Before he died that same year, he donated $250,000 to help establish the organization later known as amfAR, the Foundation for AIDS Research. Friend and actress Elizabeth Taylor was the national chairperson until her death in 2011.

In 1987, Princess Diana also made international headlines after she shook hands with an HIV-positive man.

Pop culture icon Freddie Mercury, singer for the band Queen, passed away from AIDS-related illness in 1991. Since then, many other public figures have revealed that theyre HIV-positive, including:

  • tennis star Arthur Ashe
  • former basketball star and entrepreneur Magic Johnson
  • Pedro Zamora, a cast member on MTVs The Real World: San Francisco
  • actor Charlie Sheen, who announced his status on national television in 2015
  • hairstylist and television personality Jonathan Van Ness
  • actor and singer Billy Porter

Where Did Aids Come From

Ask Dr, Nandi: New HIV strain discovered

Scientists have traced the origin of HIV back to chimpanzees and simian immunodeficiency virus , an HIV-like virus that attacks the immune system of monkeys and apes.

In 1999, researchers identified a strain of chimpanzee SIV called SIVcpz, which was nearly identical to HIV. Chimps, the scientist later discovered, hunt and eat two smaller species of monkeysred-capped mangabeys and greater spot-nosed monkeysthat carry and infect the chimps with two strains of SIV. These two strains likely combined to form SIVcpz, which can spread between chimpanzees and humans.

SIVcpz likely jumped to humans when hunters in Africa ate infected chimps, or the chimps infected blood got into the cuts or wounds of hunters. Researchers believe the first transmission of SIV to HIV in humans that then led to the global pandemic occurred in 1920 in Kinshasa, the capital and largest city in the Democratic Republic of Congo.

The virus spread may have spread from Kinshasa along infrastructure routes via migrants and the sex trade.

In the 1960s, HIV spread from Africa to Haiti and the Caribbean when Haitian professionals in the colonial Democratic Republic of Congo returned home. The virus then moved from the Caribbean to New York City around 1970 and then to San Francisco later in the decade.

International travel from the United States helped the virus spread across the rest of the globe.

READ MORE: Pandemics That Changed History: A Timeline

Read Also: The Microorganisms That Cause Hepatitis And Hiv Are Called

Was Hiv Created In A Lab

No. HIV is a virus that has evolved over time and though it became a global pandemic only recently in human history, its origins are much older and found in nature.How can I tell if I’m infected with HIV?

The only way to know if you are infected is to be tested for HIV infection. You cannot rely on symptoms to know whether or not you are infected. Many people who are infected with HIV do not have any symptoms at all for 10 years or more.

The following may be warning signs of advanced HIV infection:

  • rapid weight loss
  • recurring fever or profuse night sweats
  • profound and unexplained fatigue

Origin And Distribution Of Sivcpz

Of the many primate lentiviruses that have been identified, SIVcpz has been of particular interest because of its close genetic relationship to HIV-1 . However, studies of this virus have proven to be challenging because of the endangered status of chimpanzees. The first isolates of SIVcpz were all derived from animals housed in primate centers or sanctuaries, although infection was rare in these populations. Collective analyses of nearly 2,000 wild-caught or captive-born apes identified fewer than a dozen SIVcpz positive individuals . Because other primate species, such as sooty mangabeys and African green monkeys, are much more commonly infected, both in captivity and in the wild , this finding raised doubts about whether chimpanzees represented a true SIV reservoir. To resolve this conundrum, our laboratory developed noninvasive diagnostic methods that detect SIVcpz specific antibodies and nucleic acids in chimpanzee fecal and urine samples with high sensitivity and specificity . These technical innovations, combined with genotyping methods for species and subspecies confirmation as well as individual identification, permitted a comprehensive analysis of wild-living chimpanzee populations throughout central Africa.

Read Also: Does Hiv Medication Make You Gain Weight

New Class Of Antiretrovirals

In 1995, the FDA approved saquinavir, the first in a different anti-HIV drug class called protease inhibitors. Like NRTIs, protease inhibitors stop the virus from copying itself, but at a different stage during the infection.

A year later came yet another class of antiretrovirals, called non-nucleoside reverse transcriptase inhibitor , including nevirapine . Similar to AZT, NNRTIs shut down HIV by targeting the enzymes it needs to multiply.

These drugs paved the way to a new era of combination therapy for HIV/AIDS. Doctors began prescribing saquinavir plus AZT or other antiretrovirals. This combination therapy was dubbed highly active antiretroviral therapy . That approach became the new standard of care for HIV in 1996. HAART greatly lengthened the life span of people with AIDS.

Where Did Hiv Come From A Look At The Origins Of The Pandemic Of Our Time

First New HIV Strain Discovered In Nearly 20 Years

A chimpanzees virus has killed 35 million humans.

That virus, commonly known as HIV, is the defining pandemic of our time. More than 35 million people have been killed by the virus to date. But the virus itself didnt get its start in humans.

HIV/AIDS is, like the vast majority of emerging viruses infecting people, zoonotic in nature. The AIDS crisis, as we generally think of it, began in the 1980s. First as a mysterious illness primarily infecting gay men in urban areas in the United States. But thats not really the beginning. Before the diseases first mention in 1982 in the New York Times, people had been dying of AIDS for at least a decade, though probably not much longer. In Africa, HIVthe virus that causes AIDShad jumped from chimpanzees to humans sometime early in the 20th century.

To date, the earliest known case of HIV-1 infection in human blood is from a sample taken in 1959 from a man whod died in Kinshasa in what was then the Belgian Congo.

Its this fact which keeps me awake at night. Imagine, for a moment, that the HIV virus in that 1959 sample had been studied and identified. If, in the 1950s, the scientific community realized the potential harm this new virus could unleash. What could we have done? What therapies could we have developed before it became one of the deadliest pandemics in human history? Would we have a cure by now?

That work takes several forms, including:

You May Like: Can You Get Hiv Through Sperm

Canadian Flight Attendant Theory

A Canadian airline steward named GaĆ«tan Dugas was referred to as “Case 057” and later “Patient O” with the alphabet letter “O” standing for “outside Southern California”, in an early AIDS study by Dr. William Darrow of the Centers for Disease Control. Because of this, many people had considered Dugas to be responsible for taking HIV to North America. However, HIV reached New York City around 1971 while Dugas did not start work at Air Canada until 1974. In Randy Shilts‘ 1987 book And the Band Played On , Dugas is referred to as AIDS’s Patient Zero instead of “Patient O”, but neither the book nor the movie states that he had been the first to bring the virus to North America. He was incorrectly called “Patient Zero” because at least 40 of the 248 people known to be infected by HIV in 1983 had had sex with him, or with a person who had sexual intercourse with Dugas.

Homeless People And Intravenous Drug Users In New York

A volunteer social worker called Betty Williams, a Quaker who worked with the homeless in New York from the seventies and early eighties onwards, has talked about people at that time whose death would be labelled as “junkie flu” or “the dwindles”. In an interview for the Act Up Oral History Project in 2008, she said: “Of course, the horror stories came, mainly concerning women who were injection-drug users … who had PCP pneumonia , and were told that they just had bronchitis.” She continues: “I actually believe that AIDS kind of existed among this group of people first, because if you look back, there was something called junkie pneumonia, there was something called the dwindles that addicts got, and I think this was another early AIDS population way too helpless to ever do anything for themselves on their own behalf.”

Julia Epstein writes in her book Altered Conditions: Disease, Medicine and Storytelling that: “As we uncover more of the early history of HIV infection, it becomes clear that by at least the 1970s the virus was already making major inroads into the immune systems of a number of diverse populations in the United States and had for some time been causing devastation in several countries in Africa.”

Don’t Miss: Can I Get Hiv From Oral

Why Is Haiti Significant

In the 1960s, the ‘B’ subtype of HIV-1 made its way to Haiti. This is thought to have happened because many Haitians had been working in the Democratic Republic of Congo and had then returned to Haiti. Initially, Haitians were blamed for starting the HIV epidemic, and suffered severe racism, stigma and discrimination as a result.

The Cultural Response To Hiv

First new HIV strain discovered in nearly two decades

Public response was negative in the early years of the epidemic.

In 1983, Dr. Joseph Sonnabend in New York was threatened with eviction for treating people with HIV, leading to the first AIDS discrimination lawsuit.

Bathhouses across the country closed due to sexual activity and the associated risk. Some schools also barred children with HIV from attending.

U.S. blood banks started screening for HIV in 1985, and men who had sex with men were banned from donating blood . first lifted some of its restrictions in December 2015. The FDA loosened its restrictions again in 2020, motivated by the blood shortage caused by COVID-19.)

In 1987, the United States placed a travel ban on visitors and immigrants with HIV.

The United States government resisted funding needle exchange programs due to the War on Drugs. NEPs were shown to be effective at reducing HIV transmission.

In 1997, researchers calculated that this resistance accounted for .

The number of avoidable transmissions may be even higher.

A 2005 study looked at people in New York City who used injectable drugs and had been admitted to a drug detoxification program. The researchers concluded that the legalization of syringe exchange programs helped reduce HIV prevalence among this group from 50 percent in 1990 to 17 percent in 2002.

Also Check: How Many New Hiv Cases Per Year

Impact On Young People

  • Teens and young adults continue to be at risk, with those under 35 accounting for 57% of new HIV diagnoses in 2019 .51 Most young people are infected sexually.52
  • Among young people, gay and bisexual men and minorities have been particularly affected.53
  • Perinatal HIV transmission, from an HIV-infected mother to her baby, has declined significantly in the U.S., largely due to increased testing efforts among pregnant women and ART which can prevent mother-to-child transmission.54,55,56
  • A recent survey of young adults found that HIV remains a concern for young people, especially for young people of color.57

Popular Articles
Related news