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TasP stands for Treatment as Prevention in English, that is to say antiretroviral treatment as prevention. In the context of HIV infection, treatment not only protects the seropositive person, since they do not develop AIDS, but it prevents any risk of contaminating other people. Provided that the treatment is well carried out, enough to make it possible to make the viral load undetectable for at least 6 months.
How it works ? “After contamination with HIV, the virus multiplies, the amount of virus in the blood (viral load) increases and can reach very high values”, can we read on the site sida-info-service.org. When appropriate, “antiretroviral treatment blocks the virus and prevents it from multiplying”. Then, “the viral load gradually drops over 1 to 6 months to reach a value below the threshold detected in the laboratory, i.e. 50 copies per milliliter of blood”. This charge then becomes undetectable, a level too low to be able to contaminate other people in the event of exposure.
