The Quest for an Effective HIV Vaccine Presents New Possibilities, Challenges

A vaccine that prevents HIV infection remains an important goal in the fight against AIDS, but the current top HIV vaccine candidates may not work in this way, say scientists at the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health (NIH). Rather, the first successful preventive HIV vaccines, if administered prior to HIV infection, may reduce HIV levels in the body, thereby delaying the progression to AIDS and the need to start antiretroviral drugs. These vaccines may also reduce the chance that a person infected with HIV would pass the virus on to other people, according to NIAID Director Anthony S. Fauci, M.D., and Margaret I....

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