There was once a man who lived in New York, United States – Stephen Lyon Crohn.He was born on September 5 1946 in Manhattan and was a homosexual. After training as an artist and social worker, he worked as a painter and sculptor and as a freelance editor for Fodors Travel.

Fascinations began when it was discovered that many of his male partners were dying from AIDS. He was tested several times as part of the routine to investigate partners of AIDS victims, but he always tested negative. Scientists pondered, either he was lucky or was indeed immune.

In the early 1990s his case came to the attention of Bill Paxton, a scientist at the Aaron Diamond AIDS Research Center in New York who had been looking for gay men who seemed resistant to infection. With a colleague, David Ho, Paxton exposed Crohns blood cells, and those of another volunteer, to HIV.


Bravely, he volunteered to have his white blood cells exposed to H.I.V. but doctors were unable to infect him – even at concentrations thousands of times stronger than anything that would occur outside a test tube.

Crohn had the “delta 32” mutation on the CCR5 receptor, a protein on the surface of white blood cells that is involved in the immune system and serves as an access route for many forms of HIV virus to enter and infect host cells. This mutation rendered him effectively immune to many forms of HIV.

In later life he ran support groups for Aids patients and made sure that the lives of all his friends who had died of the disease were commemorated with a square on the huge Aids Memorial Quilt, which now consists of more than 48,000 hand-sewn panels.

The research into Crohn’s immune system led to the development of MARAVIROC, a drug that blocks the CCR5 receptor and is used to prevent infection spreading in patients who have contracted the virus. In 2006, an AIDS patient in Germany was pronounced cured after receiving bone marrow transplants from a donor who had the mutation.

DEATH

On August 23, he committed suicide following drug overdose, according to his sister Amy Crohn Santagata. ‘My brother saw all his friends around him dying, and he didn’t die,’ Ms Santagata said. ‘He went through a tremendous amount of survivor guilt about that and said to himself, “There’s got to be a reason.”

She added: ‘He was quite extraordinary, and then also quite ordinary

OTHER IMMUNE PEOPLE

Very few people have this genetic variation, which some scientists think has been inherited from ancestors who survived the massive bubonic plague in Europe centuries ago. About 1% of Caucasians have it, and it is even rarer in Native Americans, Asians, and Africans. A 2005 report indicated that 1% of people descended from Northern Europe are virtually immune to AIDS.

Immune Africans

In early 2000, researchers discovered a small group of prostitutes in Nairobi, Kenya who were estimated to have sexual contact with 60 to 70 HIV positive clients a year without signs of infection.

Source : http://www.healthlineafrica.com/meet-the-man-who-could-not-catch-aids/

[a href = "http://www.healthlineafrica.com/meet-the-man-who-could-not-catch-aids/"]Read more : African prostitutes who cant contract HIV[/a]

yes , you need my blood?

wordbank:
Op might be one of such
Abeg go make doctors use u test weda e go work