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Researchers isolated an antibody from a person infected with HIV that can block the virus from infecting other cells.

Shortly after HIV was identified in 1984 as the cause of AIDS, scientists started working on a vaccine to protect people against the infection.

But HIV is a complex and changeable virus, making a safe and effective vaccine elusive.

Still, the attempt continues.

The latest discovery on this front comes from a team led by ...

HIV, or human immunodeficiency virus, particles in purple, cause the disease AIDS. (CDC/ Dr. A. Harrison; Dr. P. Feorino)

A cure for HIV and AIDS reportedly could be just a few years away after scientists have been able to successfully snip away the virus from infected ...