Environmental Sciences, asked by ramghariahappy09, 5 months ago

When was AIDS noticed for the first time ?​

Answers

Answered by prerna1813
2

AIDS was first discovered in 1959

Answered by sai1484
0

Explanation:

AIDS- Acquired Immuno Deficiency Syndrome was noticed first time in 1959.

1959:Congoleseman

AIDS DAY- DECEMBER1st

important points from below:

one of the earliest documented HIV-1 infections was discovered in a preserved blood, sample taken in 1959from a man from Leopoldville (now named as Kinshasa (Democratic republic of Congo)). however it is unknown whether the anonymous person ever developed AIDS and died off its complications.In 1982 public health officials begin to use the term AIDS-the first named virus as HTLV-|||/LAV(Human T-cell lympotrophic-|||/lymphadenopathy associated virus by an international scientific committee. this name was later changed to HIV.AIDS is majorly caused from HIV-1 infection .

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Scientists identified a type of chimpanzee in West Africa as the source of HIV infection in humans. They believe that the chimpanzee version of the immunodeficiency virus (called simian immunodeficiency virus or SIV) most likely was transmitted to humans and mutated into HIV when humans hunted these chimpanzees for meat and came into contact with their infected blood. Over decades, the virus slowly spread across Africa and later into other parts of the world.

The earliest known case of infection with HIV-1 in a human was detected in a blood sample collected in 1959 from a man in Kinshasa, Democratic Republic of the Congo. (How he became infected is not known.) Genetic analysis of this blood sample suggested that HIV-1 may have stemmed from a single virus in the late 1940s or early 1950s.

We know that the virus has existed in the United States since at least the mid- to late 1970s. From 1979–1981 rare types of pneumonia, cancer, and other illnesses were being reported by doctors in Los Angeles and New York among a number of male patients who had sex with other men. These were conditions not usually found in people with healthy immune systems.

In 1982 public health officials began to use the term "acquired immunodeficiency syndrome," or AIDS, to describe the occurrences of opportunistic infections, Kaposi's sarcoma (a kind of cancer), and Pneumocystis jirovecii pneumonia in previously healthy people. Formal tracking (surveillance) of AIDS cases began that year in the United States.

In 1983, scientists discovered the virus that causes AIDS. The virus was at first named HTLV-III/LAV (human T-cell lymphotropic virus-type III/lymphadenopathy-associated virus) by an international scientific committee. This name was later changed to HIV (human immunodeficiency virus).

For many years scientists theorized as to the origins of HIV and how it appeared in the human population, most believing that HIV originated in other primates. Then in 1999, an international team of researchers reported that they had discovered the origins of HIV-1, the predominant strain of HIV in the developed world. A subspecies of chimpanzees native to west equatorial Africa had been identified as the original source of the virus. The researchers believe that HIV-1 was introduced into the human population when hunters became exposed to infected blood.

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