Medical Information


NAM endorses Undetectable equals Untransmittable (U=U) consensus statement 



 NAM endorses Undetectable equals Untransmittable (U=U) consensus statement
9 February, 2017

NAM aidsmap, one of the foremost sources of HIV information in the world, strongly endorses the ‘Undetectable Equals Untransmittable’ (U=U) Consensus Statement issued by the Prevention Access Campaign.

NAM’s Executive Director, Matthew Hodson, says, “The scientific evidence is clear. Someone who has undetectable levels of virus in their blood does not pose an infection risk to their sexual partners.


“In terms of HIV prevention, if condom use is safer sex, then sex with someone who has maintained an undetectable viral load is even safer sex.


“This understanding transforms the way that HIV is considered with enormous implications for what it now means to live with HIV and the best ways to prevent it. The preventative impact of effective HIV treatment underlines the importance of expanding access to treatment and of improving treatment uptake and adherence for all people living with HIV worldwide.”


Transmission risk is a major concern for people living with HIV and their sexual partners. Since the results of the PARTNER study it has been clear that the risk of HIV transmission when treatment is effective is negligible. “The fear of catching HIV from a sexual partner fuels HIV stigma, which is why it’s so important that the ‘undetectable equals untransmittable’ message is heard and understood,” says Hodson. “Condoms are not required to prevent HIV transmission when viral load is maintained at undetectable levels, although they still play an important role in preventing other STIs.”


The U=U consensus statement reads:

People living with HIV on ART [antiretroviral therapy] with an undetectable viral load in their blood have a negligible risk of sexual transmission of HIV.  Depending on the drugs employed it may take as long as six months for the viral load to become undetectable. Continued and reliable HIV suppression requires selection of appropriate agents and excellent adherence to treatment. HIV viral suppression should be monitored to assure both personal health and public health benefits.[i]


Matthew Hodson continued, “Those of us with diagnosed HIV have had to live with the idea that our bodies are dangerous. This has had a profound emotional impact on many people. Many people who live with the virus face not just sexual but also social rejection as a result. In some countries having sex without disclosing HIV status is criminalised, regardless of whether there is a risk of transmission. Ignorance about transmission risk means that people are turned away from services, such as tattooists, or even denied medical treatment. No other sexually transmitted infection carries the same power to strike fear into the hearts of the population.


“People with HIV are everywhere. We are all nationalities, all races and religions, young and old, gay, bisexual and straight. When we are undetectable we are uninfectious. This means that pretty much all the fear that HIV-negative people have of those of us living with HIV is just wasted energy.”


NAM’s mission is to support people living with HIV to live longer, healthier lives. Through providing information NAM enables people to take control of their lives and health care, understand and adhere to their HIV treatment and live longer, healthier and better quality lives.


NAM was among the first to provide accessible and accurate information about the research on the impact of treatment on transmission risk, including reports on the HPTN 052 trial and the PARTNER Study in 2011 and 2014 respectively. These stories have been some of the most popular reports on the aidsmap website. The knowledge of the impact of successful treatment on transmission risk is a powerful tool to support people living with HIV and a challenge to the stigma that people with HIV often face.



Notes for Editors

  • Information about the Prevention Access Campaign can be found at:
  • HPTN 052 was a randomised controlled trial which showed that prompt HIV treatment reduced the risk of HIV transmission to an uninfected partner by at least 96%. For more information:
  • The PARTNER study is a large observational study that has not identified any cases where someone with an undetectable viral load has transmitted HIV during anal or vaginal sex. For more information:
  • NAM’s mission statement: NAM exists to support the fight against AIDS with independent, accurate, accessible and comprehensive information. We aim to create and disseminate information resources rooted in the experiences of those most affected, enabling individuals and communities to take action and control in responding to HIV and AIDS.
  • Founded in 1987, NAM is one of the world’s foremost providers of independent information on HIV and viral hepatitis. With a global audience consisting of people living with HIV, activists and advocates, clinicians, other healthcare workers and NGO staff, NAM delivers reliable, useful and responsive information on all aspects of HIV and related conditions, such as hepatitis.
  • NAM’s website, is viewed over 6 million times a year. Its hepatitis website  is viewed over 100,000 times a year.
  • All of NAM’s patient information resources are certificated by the Information Standard (IS), the kite mark for trustworthy information. These are the only in-clinic resources available with IS certification.
  • NAM’s organisation values are useful, reliable, responsive. These values underpin everything NAM does. They are why NAM is a trusted and credible source of high quality information on HIV and viral hepatitis.


For more information contact: or call 020 7837 6988.