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Undetectable = Untransmittable

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For years HIV has been associated with fear.

But now, science has found something incredible: a person can live with HIV and if their viral load is undetectable they can’t transmit HIV through sex.

Zero transmission.

Yet, this information is not largely known by the general public.

When we ignore U=U, it doesn’t protect people better. It only helps to spread fear, prejudice and stigmatisation.

The science is clear.

The question is: why is this message STILL not well-known around the world?

Discover what Undetectable = Untransmittable actually means. 

This post was made in collaboration with @PWHRCanada.

Sources
  1. HIV: Undetectable = Untransmittable (U=U) | Government of Canada
  2. Preventing HIV transmission: Undetectable = Untransmittable (U=U) for health professionals (fact sheet) | Government of Canada
  3. HIV treatment and an undetectable viral load to prevent HIV transmission | CATIE – Canada’s source for HIV and hepatitis C information
  4. Sexual Activity Without Condoms and Risk of HIV Transmission in Serodifferent Couples When the HIV-Positive Partner Is Using Suppressive Antiretroviral Therapy | JAMA | July 2016
  5. Antiretroviral Therapy for the Prevention of HIV-1 Transmission | New England Journal of Medicine | September 2016
  6. Risk of HIV transmission through condomless sex in serodifferent gay couples with the HIV-positive partner taking suppressive antiretroviral therapy (PARTNER): final results of a multicentre, prospective, observational study | The Lancet | June 2019
  7. Viral suppression and HIV transmission in serodiscordant male couples: an international, prospective, observational, cohort study | The Lancet HIV | August 2018
  8. Prevention of HIV-1 Infection with Early Antiretroviral Therapy | New England Journal of Medicine | August 2011
  9. FR : Les personnes séropositives ne souffrant d’aucune autre MST et suivant un traitement antirétroviral efficace ne transmettent pas le VIH par voie sexuelle | Bulletin des médecins suisses | 2008
  10. A guide for service providers U=U | CATIE & OAN.red Ontario AIDS Network
  11. Undetectable = Untransmittable (U = U): insights from people living with HIV attending health facilities in Rwanda | BMC Public Health | January 2025

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