Why is there no vaccine against AIDS?

• April 30, 2024

The reason why there is not yet a effective vaccine against AIDS, orHIV , is that the human immunodeficiency virus has a unique method to evade the immune system, and the human body is unable to offer an effective response.

The vaccinations designed against virus they have an inverse effect, leading to the spread and not to the decrease or destruction of the virus among vaccinated people; this due to an increasing amount of CD4 T cells , according to a study published on the portal Pnas .

The virus infects the same cells of the immune system that any vaccine usually activates, "the doctor said in a statement. Guido Silvestri American microbiologist and immunologist Primate Research Center at Emory University .

Upon entering the body the virus attacks the CD4 T cells (type of leukocytes), responsible for the recognition of the "enemies", reproduces in them, while the organism does not recognize it as a pathogen.

The T CD4 they operate in conjunction with CD8 T cells, whose function is to eliminate the infection. But the organism is unable to develop the appropriate defense for not detecting this "enemy".

Video Medicine: The Need for an HIV Vaccine (April 2024).