10 years of U=U.
More freedom to live and love.

In 2026, U=U marks ten years as a community-led movement. This anniversary belongs to people living with HIV, their partners, researchers, clinicians, and advocates who insisted that life-changing evidence should reach the people whose lives it affects. There is joy here: the possibility of dating without the same fear, feeling at home in your body, and imagining a future together.

Start with the lived experiences, follow the history of the movement, or go directly to the research and practical meaning of viral suppression. U=U is both a scientific fact and a message people can carry into everyday life.

Ten years of U=U. A future with more possibility.

The U=U campaign began in 2016, with its consensus statement issued that July. The anniversary celebrates the movement that brought treatment-as-prevention science into public language—not the beginning of all research on HIV treatment or transmission.266

Those milestones have different sources: PAC documents the campaign’s history and network; CDC and NIH guidance establish the clinical message. A network spanning 105 countries does not mean 105 governments have separately endorsed a declaration.727

From the Swiss Statement to a global movement

The 2008 Swiss Statement was an important early milestone. Pietro Vernazza and colleagues argued that successful HIV treatment prevented sexual transmission under stated conditions. It prompted debate and helped advance discussion and research. Subsequent studies strengthened the evidence, and community advocates helped bring it to people worldwide. For care decisions now, use current treatment guidance.28

1. 2008 · An early public statement. The Swiss National AIDS Commission helped bring the connection between effective treatment and sexual transmission into the open.
2. 2011 · Randomized evidence. HPTN 052 showed the prevention benefit of early treatment.1
3. 2016 · A message people could use. PAC founder Bruce Richman worked with people living with HIV, scientists, and advocates to build and share the U=U consensus. PAC credits a February conversation between Richman and activist-journalist Gus Cairns, followed by community input, in the development of the name.26
4. 2018–2019 · More evidence, wider confidence. Published Opposites Attract and PARTNER2 findings strengthened the evidence for sexual U=U, including anal sex.54
5. 2021 · Recognition at the United Nations. Paragraph 39 of the UN Political Declaration on HIV and AIDS recognized the evidence behind U=U. This is a separate document from PAC’s 2016 consensus statement.29
6. 2026 · The next decade. The tenth anniversary is a chance to celebrate progress and ask who still has not heard the message or received the care that makes it possible.

How far has U=U reached?

PAC’s website lists more than 1,000 community partners across 105 countries, checked September 28, 2026. Its network brings together community organizations, advocates, researchers, and public-health partners. Membership figures can change, and participation is different from a national government endorsement.27

What about U.S. state health departments?

A published review of the 50 states and Washington, DC found that 33 of 51 health-department websites explicitly mentioned U=U. That review examined websites in February 2022; it was published in 2023. It measured website messaging, not the number of departments signing PAC’s statement. It should not be presented as a current 2026 endorsement count.31

For current public-facing examples, the New York State Department of Health explains U=U in its Beyond Status campaign. The Florida Department of Health’s U=U fact sheet states the sexual-transmission message and emphasizes staying undetectable. These are examples, not a complete national tally.3233

The next decade: leadership and Undetectable Voices

Dr. Monique Carry now leads PAC’s next chapter. PAC announced that she would become Acting Executive Director on January 1, 2026, as founder Bruce Richman stepped back from day-to-day leadership. The September 17 anniversary announcement identifies her as Executive Director. Her work brings expertise in behavioral science and health communication to expanding U=U’s reach.3435

For ways to keep learning or bring the message into your community, explore PAC’s U=U Resource Center and its U=U University. Here on RiseUpToHIV, Voices Rising is our separate community space for sharing a personal story. There is no expectation to make your HIV status public.

What U=U can feel like: relief, connection, and liberation

U=U can help loosen the shame people have been taught to carry about HIV. In interviews, people have described feeling freer to pursue relationships, enjoy intimacy, and picture a future together. These accounts help explain why the message can feel liberating; they do not mean that everyone experiences the same change.23

In people’s own words

Changing how other people see HIV

Stories can also help people without HIV reconsider what they believe. A 2023 study explored responses to the film HIV Made Me Fabulous, which shares Juno Roche’s story of living and loving with HIV and introduces U=U. In discussions with 28 participants, including 16 women living with HIV, viewers described empathy, reflection on their own biases, and motivation to challenge stigma. Women living with HIV also discussed self-acceptance and the continuing difficulties of disclosure. These were responses to a film and group discussions, rather than evidence that a single U=U message eliminates stigma.25

These qualitative studies describe participants’ experiences; they do not establish how often a particular emotional response occurs. The transmission evidence is covered in the clinical studies below.

The landmark studies, one at a time

Four studies carry most of the weight. They were designed differently on purpose — different continents, different populations, different sexual practices, different eras of treatment — and they converged. That convergence is what makes the finding durable rather than lucky.

One sentence from the 2016 HPTN 052 paper does more work than any other line in this literature: “No linked infections were observed when HIV-1 infection was stably suppressed by ART in the index participant.”2 Every linked transmission in that trial happened either before suppression was achieved or after it was lost. Not one happened during stable suppression. This is the hinge on which U=U turns, and it came from a randomized controlled trial — strong evidence for treatment’s prevention benefit.

The eleven unlinked infections were not transmissions from the suppressed study partner. Viral genetic analysis can rule out a proposed link; it cannot, by itself, prove precisely who transmitted HIV to whom. That distinction matters when reading study results or discussing criminal-law evidence.17

That PrEP-excluded analysis matters. It is the most common good-faith objection to Opposites Attract — that PrEP was doing the work. The investigators ran the numbers with PrEP periods removed and still found zero linked transmissions across more than twelve thousand condomless acts.

The numbers, added up honestly

You will see “over 100,000 sex acts, zero transmissions” quoted a lot. It is true, and it is worth being precise about how it adds up, because being sloppy with these figures gives skeptics an opening they do not deserve.

The honest arithmetic: PARTNER2 is the extension of PARTNER's gay-couple follow-up, so you cannot simply add PARTNER's full 58,000 acts to PARTNER2's 76,088 — you would double-count roughly 22,000 of them. What you can add without inflating anything is PARTNER's heterosexual arm (approximately 36,000 condomless acts),3 PARTNER2's gay-couple total (76,088),4 and the suppressed/no-PrEP analysis in Opposites Attract (12,447).5

What does zero mean statistically? No study can prove a risk is exactly 0.000. What studies do is put a ceiling on how large the risk could plausibly be. PARTNER2's ceiling was 0.23 transmissions per 100 couple-years.4 PARTNER's was 0.30 overall.3 These confidence limits describe the statistical precision of each study’s estimate; they are not observed transmissions. No linked transmissions were observed during eligible follow-up with viral suppression.

Older materials sometimes used cautious language such as “negligible.” PAC added a January 2018 editorial note to its historical consensus PDF explaining that the term can mislead readers and recommending clear zero-risk language instead.6 Current WHO guidance states that an undetectable viral load carries zero risk of sexual transmission.11

What “undetectable” actually means — and the 200 number

“Undetectable” sounds absolute, but it is a lab result, and lab results depend on the machine. This trips people up constantly, so here is the distinction laid out.

Two different thresholds, both real

Modern viral load assays can often detect HIV RNA down to 20 or even fewer copies per milliliter. When your result comes back as “undetectable,” what it usually means is “below the lowest level this particular test can measure” — which might be <20, <40, or <50 depending on the lab. That number will move around between labs, and it does not mean your treatment changed.

The U.S. sexual-transmission prevention threshold is under 200 copies/mL, including measurable results below that level.8 This differs from a laboratory’s lower “undetectable” cutoff. PARTNER, PARTNER2, and Opposites Attract used below 200 copies/mL to define suppression in their analyses.35

This is the single most reassuring thing on this page for anyone whose result came back as 43 or 120 instead of “undetectable.” The trials that produced the U=U evidence did not require you to be below 50. They required you to be below 200. If you are under 200 and staying under 200, you are inside the population these studies were built from.

WHO's three categories

In 2023, WHO formalized a three-tier framework in a policy brief on viral suppression, and it is a useful mental model.10 aidsmap described it as a traffic light.11

• Undetectable — no virus detected by the test. Zero risk of sexual transmission, and minimal risk of passing HIV to a child.10
• Suppressed but detectable — some virus detected, at or below 1,000 copies/mL. This is a suppression category, not a statement that the laboratory cannot quantify the result. Risk described by WHO as “almost zero or negligible.”10 WHO recommends enhanced adherence support and a repeat viral load in three months.11
• Unsuppressed — above 1,000 copies/mL. This is the category that needs clinical attention, and where transmission risk is real.10

Why does WHO use 1,000 when U.S. guidance uses 200? Largely because of test availability. In many parts of the world, viral load monitoring runs on point-of-care platforms or dried blood spot testing, where the reliable clinical threshold sits nearer 1,000 copies/mL.11 The framework is designed for the tests people actually have access to, not the tests we wish everyone had. WHO's own figures show why access is the fight: at the end of 2022, 29.8 million of 39 million people living with HIV globally were on treatment (76%), and 71% of all people living with HIV had suppressed viral loads — but among children, suppression was only 46%.10

How long it takes to become undetectable

Modern antiretroviral therapy works fast. Many people see a steep drop in viral load within the first few weeks. But there is a difference between “my number dropped” and “I can rely on U=U,” and it is worth being clear about the gap.

Most people taking effective treatment reach viral suppression within six months, and many do so earlier. Your own result—not the calendar alone—shows how treatment is working.8

For people starting ART, federal guidance recommends another HIV prevention method for at least the first six months of treatment and until a viral load below 200 copies/mL has been documented. Confirm sustained suppression with your clinician before relying on U=U. This is not a requirement to start a new six-month clock after the first undetectable result.21

That six-month figure is not a punishment or a probation period. It exists because it takes time to confirm that a regimen is working for your body, that you can take it consistently, and that the suppression is stable rather than momentary. If you are three months into treatment with a great number, you are doing well and you are on track. You are also allowed to wait until you and your provider are confident before you change how you approach sex.

Once you are suppressed, monitoring continues. WHO's recommended schedule is a routine viral load test at six months after starting treatment, again at twelve months, then yearly.10 In U.S. care you will often be tested more frequently. Those tests are how you know U=U still applies to you — which is a much better relationship with a lab result than dread.

Viral blips — why one detectable result does not undo U=U

This section exists because of a specific, common panic: you have been undetectable for two years, and then a result comes back at 78 copies. Your stomach drops. You start doing arithmetic about every sexual encounter in the last three months.

Take a breath. What you are most likely looking at is a blip.

What a blip is

Clinical guidelines define a blip as a newly detectable HIV RNA level, typically in the 50 to 500 copies/mL range, in someone previously suppressed, which returns below the level of quantification on prompt repeat testing.15 The key word is repeat — a blip is only definable retrospectively, after the follow-up test comes back down.

What causes them? Often nothing you did. A 2006 analysis in the Journal of Antimicrobial Chemotherapy by Lee, Kieffer, Siliciano, and Nettles concluded that most blips represent random biological and statistical variation around a mean below 50 copies/mL, or artefacts of laboratory processing — and that they were not typically associated with resistance mutations, nor with virological or clinical failure.16 Clinical guidelines add that an acute concurrent illness or a recent vaccination can also cause a transient rise.15

What to do

• Retest. Guidelines recommend repeating the viral load within four weeks for a new result under 500 copies/mL after prior suppression, and within two weeks if the result is 500 copies/mL or higher.15
• Do not change your regimen off one number. Guidelines state directly that treatment should not be changed based on a single viral load elevation.15
• Take a persistent pattern seriously. Isolated blips are usually benign, but consecutive blips and sustained low-level viremia are associated with elevated risk of later treatment failure, and persistent low-level virus can allow resistance to develop.15 One blip is noise. A trend is information.

Where does this leave U=U? Maintaining a viral load below 200 copies/mL on ART prevents sexual HIV transmission, including when a sensitive test detects a value below that threshold. If a result is 200 copies/mL or higher, use an additional prevention method until resuppression below 200 is confirmed and discuss the follow-up plan with your clinician. A repeat test, not shame or guesswork, is the next step.21

Adherence — the part U=U actually depends on

Here is the honest caveat that belongs in every U=U conversation: the equation runs on treatment that is actually in your body. U=U is not a property of having HIV. It is a property of being on effective, sustained treatment.

Continued treatment and viral-load monitoring help maintain suppression. If access, side effects, mental health, substance use, or an unstable living situation make care difficult, you deserve practical help and a treatment plan that works for you.21

What it does not mean is that one missed dose flips a switch. Modern regimens are built with higher barriers to resistance and longer forgiveness windows than the drugs of the 1990s, and a single late or missed dose is a common human event, not a catastrophe. Treatment interruptions can allow viral rebound within days to weeks. The exact timing varies; there is no guaranteed safe interruption. Running out of medication, losing insurance, housing instability, or active depression can interrupt treatment. Those situations need support; they are not character flaws.

If daily pills are the obstacle, the pill is no longer the only option.

Long-acting injectable treatment

Long-acting injectable cabotegravir plus rilpivirine is approved as a complete regimen — given monthly or every two months — for people twelve and older who weigh at least 35 kg and have sustained virologic suppression (HIV-1 RNA under 50 copies/mL) on a stable regimen, with no history of treatment failure and no known or suspected resistance to either drug.20 HIV.gov notes plainly that long-acting injections given every two months are available.8

Two things to understand about it. First, it is a switch option, not a starting option — the federal treatment panel recommends it to replace an existing oral regimen in people who have had sustained viral suppression for at least three months, with no documented or suspected resistance to either drug, no active hepatitis B infection unless separately treated, not pregnant or actively planning pregnancy, and not taking medications with significant interactions.20 Second, it replaces daily pills with scheduled treatment visits for eligible people. Monthly or every-two-month attendance, monitoring, and a plan for delayed injections still matter.

Pregnancy, birth, and infant feeding

Sexual U=U supports conception without passing HIV to a sexual partner when suppression is maintained. Pregnancy, birth, and infant feeding also benefit greatly from treatment, but require their own care plans. The sexual zero-risk statement should not be extended to these different transmission routes.

Pregnancy and birth

Effective HIV treatment during pregnancy and birth, together with the infant’s preventive medicines and testing, greatly reduces transmission risk. Planning care before conception, when possible, helps protect the health of the parent and baby.14

Treatment during pregnancy and delivery, together with appropriate infant preventive medication, can reduce perinatal transmission risk to 1% or less.8 Infant medication is tailored to risk: current NIH guidance recommends two weeks of zidovudine for infants at low risk, while higher-risk infants need different regimens and durations. The pediatric team also plans any prophylaxis needed during breastfeeding.22 Cesarean delivery is not recommended solely for HIV prevention when viral load is at or below 1,000 copies/mL near delivery.14 WHO likewise describes low perinatal transmission risk with sustained treatment and an undetectable viral load.10

Breastfeeding — what changed on January 31, 2023

For decades, U.S. guidance told people living with HIV not to breastfeed, full stop. That changed. On January 31, 2023, the NIH Office of AIDS Research announced an update to the federal perinatal clinical guidelines that reframed infant feeding around shared decision-making.12

The substance of the update:

• Replacement feeding — properly prepared formula or pasteurized donor human milk — carries zero risk of postnatal HIV transmission and remains a fully supported choice.12
• “The risk of HIV transmission while breastfeeding is less than 1% (but not zero) for PWH on antiretroviral therapy (ART) with sustained undetectable viral load through pregnancy and postpartum.”12 The CDC states the same figure: less than 1%, but not zero.13
• “Clinicians should support the choices of people with HIV to breastfeed (if they are virally suppressed) or to formula/replacement feed.”12
• And the sentence that carries the most weight for families who have lived under surveillance: “It is inappropriate to engage Child Protective Services (CPS) or similar services in response to infant feeding choices of PWH.”12

The guidelines were developed by the federal perinatal panel with community input, and the update explicitly recognized that restricting breastfeeding can deepen existing inequities.12 CDC's clinician guidance now calls for patient-centered, evidence-based counseling on infant feeding options to allow for shared decision-making, beginning before pregnancy or as early as possible during it, and continuing after delivery.13

Two things to hold together here. Breastfeeding while undetectable is a supported choice with a risk under 1%. It is not the same claim as sexual transmission, where the number is zero. Being precise about that difference is how we keep U=U credible — and the honest framing is not “less certain, therefore forbidden,” it is “low risk, real options, your decision, made with your clinician.” If you choose to breastfeed, providers are advised to emphasize sustained adherence and to offer close follow-up.13

What U=U does not cover — STIs, and the honest edges

U=U is a specific claim about HIV. Overstating it into a general claim about sexual health does nobody any favors, so here are the boundaries.

Other sexually transmitted infections

Maintaining an undetectable viral load does not protect you or your partners from other STIs.8 Gonorrhea, chlamydia, syphilis, herpes, mpox, and hepatitis all transmit on their own terms. The Prevention Access Campaign consensus statement makes the same point: an undetectable viral load only prevents HIV transmission to sexual partners, and condoms also help prevent HIV transmission as well as other STIs and pregnancy.6

This is not a caveat that weakens U=U. It is a reason condoms and regular STI screening remain genuinely useful tools, chosen for what they actually do rather than out of fear of a transmission that will not happen. And syphilis in particular is worth naming — rates have risen substantially in recent years, it is easily treated when caught, and it is found by testing, not by feeling fine.

Shared injection equipment

This is the genuine data gap. HIV.gov states it about as plainly as a federal agency can: “There is not enough data to know whether having a suppressed or undetectable viral load prevents HIV transmission through sharing needles, syringes, or other injection drug equipment… It very likely reduces risk, but it is unknown by how much.”8

Read that carefully, because it is often misquoted in both directions. It does not say suppression fails to protect during injection. It means there is not enough evidence to extend the sexual zero-risk statement to shared injection equipment. Sterile equipment through a syringe services program remains the intervention with actual evidence behind it. And when U=U was formally recognized in prosecutorial guidance in England and Wales in 2023, that recognition was explicitly limited to sexual transmission and did not extend to needle-sharing — the same evidentiary line.19

And what U=U was never meant to imply

U=U describes what happens when someone is on effective treatment. It says nothing about the worth of people who are not. Anyone who cannot get to care, cannot afford medication, is between insurance plans, is in active crisis, or simply has not reached suppression yet is not a failure and is not dangerous by nature. They deserve care and respect, whatever the reasons for their viral-load result. That distinction matters enormously in the legal section below.

Disclosure — what changes, and what does not

U=U rearranged the ethics of disclosure, and the rearrangement is more interesting than “you don't have to tell anyone.”

For a long time, disclosure was framed as a warning. You told someone because you posed a risk to them, and telling was how you discharged that duty. If you are undetectable and sustained, that framing collapses — there is no sexual risk to warn about.7 What remains is something closer to ordinary intimacy: you tell people about your life because you want them to know you, at the pace you choose, when you judge it safe.

As the first-person accounts above show, understanding U=U can bring confidence around intimacy while fear of rejection may still persist.24 You can decide what support you need for a disclosure conversation. You do not have to explain the entire evidence base on your own.

The legal layer is separate

Here is the part that has to be said clearly: the science and the law are not the same thing, and being undetectable does not automatically protect you legally.

Many HIV criminalization statutes in the United States were written in the late 1980s and early 1990s and turn on disclosure or exposure rather than on transmission or actual risk. Some have been reformed; many have not. Whether U=U is relevant in your jurisdiction — as a defense, as mitigation, or not at all — depends on that jurisdiction's specific statute and case law.

Some places have moved. In April 2023, prosecutorial guidance in England and Wales was updated to recognize U=U, with cases no longer to be taken to court where a person has an undetectable viral load and is aware of U=U.19 That is real progress, and it is also one country's guidance, limited to sexual transmission.19

Nothing on this page is legal advice. If you are facing a disclosure-related legal question, talk to a lawyer with HIV-specific experience. Our page on HIV criminalization covers the landscape in more detail, and stigma and disclosure covers the human side.

Myths, answered directly

“U=U only really works for straight couples.”

Backwards, in fact. PARTNER2 was built specifically to nail down condomless anal sex among gay male couples, and produced 76,088 documented condomless anal sex acts with zero linked transmissions.4 Opposites Attract recorded 12,447 condomless anal sex acts during periods of viral suppression without partner PrEP, with zero linked transmissions.5 HPTN 052 covered predominantly heterosexual couples across nine countries.1 Every configuration is covered. HIV.gov states that a person with an undetectable viral load will not transmit HIV to HIV-negative partners through vaginal, anal, or oral sex.8

“U=U only counts if you use condoms too.”

The studies would not exist if that were true. PARTNER, PARTNER2, and Opposites Attract all required reported condomless sex for follow-up to count as eligible.345 Condomless sex is the exposure that was being measured. Condoms remain a good choice for STI prevention and contraception6 — they are simply not required for U=U to hold.

“One missed dose breaks U=U.”

No. Suppression is about a sustained pattern, and the finding from HPTN 052 concerned infection being stably suppressed.2 A single late dose does not undo months or years of suppression. Sustained interruption is a different matter, which is why adherence support is part of care rather than an afterthought.6

“A detectable result means I transmitted HIV to someone.”

A detectable result does not establish that transmission occurred. A result below 200 copies/mL remains within the U=U threshold if suppression is maintained. A value at or above 200 needs prompt clinical follow-up and an additional prevention method until resuppression is confirmed; a blip can only be identified after the result comes back down.151621

“U=U applies to needle-sharing too.”

Not established. The federal position is that there is not enough data to know, that it very likely reduces risk, and that by how much is unknown.8 Sterile equipment is the evidence-backed answer there.

“U=U means HIV is cured.”

It does not. Suppression is achieved and maintained by ongoing treatment; stopping treatment allows viral load to rise again. What has changed is the trajectory — the international expert consensus on HIV science in criminal law describes antiretroviral therapy as having made HIV a chronic, manageable health condition.17

U=U in the courtroom — power and peril

U=U has become one of the most powerful pieces of evidence available to HIV criminalization reform. It has also created a trap that advocates saw coming and named out loud. Both halves matter.

The scientific ammunition

In July 2018, twenty leading HIV scientists — including Françoise Barré-Sinoussi, Salim Abdool Karim, Linda-Gail Bekker, Chris Beyrer, Julio Montaner, Andrew Grulich, and Mona Loutfy — published an expert consensus statement in the Journal of the International AIDS Society on the science of HIV in the context of criminal law.17 Two of its findings do enormous work in court.

The authors explain that transmission likelihood differs by the act and circumstances, and that many acts underlying prosecutions have no transmission possibility.17 They also explain that phylogenetic analysis can exclude a proposed transmission link but cannot, alone, establish beyond reasonable doubt that one person infected another.17

The Sero Project, which works with people living with HIV facing prosecution, hosts and promotes that statement precisely because prosecutions are not always guided by the best available scientific and medical evidence.17

The trap — a viral underclass

In July 2017, a coalition led by the Center for HIV Law and Policy launched a Consensus Statement on HIV “Treatment as Prevention” in Criminal Law Reform, in response to uncertainty about how to bring modern treatment science into reform efforts.18 Original endorsers included CHLP, Prevention Access Campaign/U=U, The Counter Narrative Project, Treatment Action Group, Women With A Vision, the National Association of Criminal Defense Lawyers, the National Center for Transgender Equality, the National LGBTQ Task Force, PFLAG, and Housing Works.18

Their warning: any reform that uses viral detectability as a litmus test for criminal liability leaves the majority of people living with HIV behind and creates a viral underclass whose increased risk of prosecution effectively receives a current-day seal of approval.18 The coalition was describing the treatment-access disparities reflected in the data available at that time; those historical figures are not a current national suppression estimate.18

And suppression is not randomly distributed. The coalition's January 2018 Call to Action cited data showing sustained viral suppression at 40.8% among Black people living with HIV, 50.1% among Hispanic people living with HIV, and 56.3% among white people living with HIV.18 A legal standard built on viral load therefore imports every existing disparity in health-care access directly into criminal exposure.

So the position most HIV justice organizations have landed on is: use U=U to demolish the false premise that people living with HIV are inherently dangerous — and refuse to let it become the new line separating the prosecutable from the protected. As Charles King of Housing Works framed it when the CHLP statement launched, it would be a travesty for U=U to be used to create a criminal class of people who are not durably virally suppressed.18

Read the consensus—and today’s guidance

The historical U=U Messaging Primer & Consensus Statement helped mobilize public understanding in 2016. Read its January 2018 editor’s note too: PAC says the original wording is no longer its preferred public-health language. Today, communicate the finding clearly: sustained viral suppression on treatment prevents sexual HIV transmission.6

Use CDC’s treatment information and NIH’s clinical treatment-as-prevention guidance for current practical advice. For global policy, see UNAIDS’ U=U brief and the 2021 UN Political Declaration, paragraph 39.729

What to do with this

Evidence only helps if it changes something. Here is what this page is actually for.

If you are newly diagnosed

Start treatment. Ask when your first viral load check will be, and what number would count as suppressed at your lab. Expect to reach undetectable within roughly six months, and understand that once you are sustained there, you cannot pass HIV to a sexual partner.8 You may need to hear that several times before it lands. That is normal.

If you are already undetectable

Know your own numbers — your last result, your lab's detection limit, how long you have been suppressed. Those three facts are the whole argument, and having them ready makes conversations with partners, family, and occasionally clinicians dramatically shorter.

If you are in a mixed-status relationship

The trials described above were built out of couples exactly like yours, and they enrolled tens of thousands of condomless sex acts to answer your specific question.345 PrEP is still available if the HIV-negative partner wants an additional layer for their own peace of mind — a third of HIV-negative partners in Opposites Attract used it5 — and choosing it is not a statement of distrust. See our PrEP page for how that works.

If you are planning a pregnancy

Bring it up before conceiving if you can, since starting treatment before pregnancy is preferred.14 Ask specifically about infant feeding, and know before you walk in that the 2023 federal update supports your choice to breastfeed if virally suppressed or to replacement feed, and states that involving Child Protective Services over infant feeding choices is inappropriate.12

If you are an advocate

Carry both halves. U=U dismantles the premise behind stigma and behind a great deal of bad law. It must not become the wall that separates suppressed people from everyone else.18 The full sentence is: people living with HIV who maintain viral suppression on effective treatment cannot transmit HIV sexually, and everyone deserves the treatment access that makes that possible.