There is life with HIV

Undetectable Viral Load and HIV-negative transmission

HIV is poorly selective in the search for a host

Undetectable viral load is the mecca of all people living with HIV! And after it has been scientifically proven that Undetectable is Non-Transferable. I recognize the thesis as defensible, yes, I do, and I go further:

It is and is scientifically proven. However, I would not embrace this thesis today or tomorrow and I will never say it because a person's truth can change!

But my position, at this moment, and this moment has been copious in years and years, I haven't embraced it until now👋! However I offer you this text.

The name of the Study, in good Portuguese, is: Opposites attract. I dare to add: To adjust edges in the search for similarity.

To match up, I would say.

Undetectable Viral Load and HIV Transmission Information to HIV-Negative People!

But please, although I personally have my reservations, people have found one more reason to treat each other better!

See, right after my diagnosis, I became "untouchable".

My fear of transmitting HIV was so dizzying that, and I'll tell you better in another text, I was just over nine months without a hug!

Undetectable Viral Load Is Not Cure

And I ended up so vulnerable that I almost screwed up!

And now, I "have" Mara! And I want nothing more than this or hers! Keep that in mind when looking for me on the What's App and, if I were alone, I still wouldn't use this axiom praying that…


… Undetectable viral load and HIV transmission 

    1. People with HIV who are on treatment and have an undetectable viral load cannot pass HIV on.
    2. This is what is meant by the slogan 'Undetectable is equal to non-transferable' ('U = U').

Not everyone on HIV treatment has an undetectable viral load.

People living with HIV who treat themselves regularly regularly measure the amount of virus in their blood.

This is called a Viral Load test.

When a person has very little virus, they are said to have an 'undetectable' viral load. Viral load is measured in units called 'copies'.

The tests used in clinics can measure viral load of up to 40 copies !. Anything less is called 'undetectable'.

When people with HIV receive effective treatment, the amount of HIV in their body fluids decreases dramatically.

And, they state the point that there is not enough HIV to transmit to another person.

The latest news and research on undetectable viral load and treatment as prevention

If anyone has a Undetectable viral loadThis does not mean you are cured of HIV. If they stop being treated for HIV, their viral load will increase and become detectable again.

But have an undetectable viral load means that there is not enough HIV in your body fluids to transmit HIV during sex. In other words, they are not infectious.

When a person has an undetectable viral load, their chance of transmitting HIV to a sexual partner is zero. As the campaign slogan puts it, 'Undetectable is equal to non-transferable' or 'I = I'.

This fact sheet was written for people who do not have HIV. This topic is also covered in a page written for people living with HIV.

British HIV Association Council

The 'Undetectable equals Untransmittable' (U = U) campaign is supported by the British HIV Association, which is the professional association of doctors and other health professionals working with HIV in the United Kingdom.

BHIVA says consistent use of HIV treatment to maintain an undetectable viral load is a highly effective way to prevent sexual transmission of HIV.

Specifically, BHIVA says there is no risk of progressive HIV transmission from people who have an undetectable viral load for at least six months and have good accession (do the treatment without missing doses).

The scientific evidence

The first large study indicating that people with low viral loads are not infectious came from a study of 415 heterosexual couples in the year 2000. This found that no HIV-positive partner with viral load below 1500 copies / ml transmitted HIV. In 2011, a large scientific study called HPTN 052 It can be concluded that HIV treatment reduced the risk of HIV transmission to a normal heterosexual partner by 96%. 

The only reason it was not 100% is that one person in the study acquired HIV, but it happened within days of their partner starting treatment. Over the course of the four-year study, no person with undetectable viral load transmitted HIV to their partner.

The final results of the studies PARTNER 1 e PARTNER 2 were announced in 2016 and 2018, respectively. Between the two, they recruited 972 gay couples and 516 heterosexual couples, in which one partner had HIV and the other did not. Throughout the study, gay couples had 77.000 acts of penetrating sex without a condom and heterosexual couples 36.000 acts. PARTNER studies did not find a single HIV transmission from an HIV positive partner who had an undetectable viral load (below 200 copies / ml).

In 2017, a similar study exclusive to 343 gay couples, Opposites Attract, also found no partner transmissions with undetectable viral load in 17.000 acts of anal sex without a condom.

Among the three studies, no HIV transmission from a sex partner with an undetectable viral load was observed in nearly 130.000 penetrative sex without condom. This means that the risk of transmission by a partner with undetectable viral load is statistically equivalent to zero.

What's up? Bet your peace of mind, your quality of life, and the tranquility of not having to medicate for the rest of your life,

Supported by a statistical database?

Some of the HIV-negative partners in these studies did acquire HIV. But using genetic tests, the researchers were able to show that all of these infections came from other people and not from their main partner.

And using condoms will help prevent STDs.

Another consideration to make is about the other person, or even you:

If one person has an STD, it may increase the likelihood of HIV transmission.

This is the case if you - the HIV negative partner - have an STI (especially syphilis). This will increase the risk of getting HIV from someone who is not being treated.

 Also, some STIs can make HIV-positive people who are not on HIV treatment even more infectious!

But this is not the case for people on HIV treatment with undetectable viral load. In the PARTNER and Opposites Attract studies, there was not a single transmission of HIV, although many people had STDs.

Wouldn't it be safer to have sex with people who don't have HIV?

Well, if you have a crystal ball, maybe, but….

Instead of always using condoms, many people try to make sex safer by choosing partners with the same HIV status as themselves. This is sometimes called bareback.

This can work for people with HIV (if their HIV status is right). But the status of seronegative people is only true until the last time they did the test. Especially in casual situations, this can mean accepting your partner's word or guessing about HIV status.

"BHIVA says consistent use of HIV treatment to maintain an undetectable viral load is a highly effective way to prevent sexual transmission of HIV."

Well, in a situation where many people have HIV without realizing it and where most people with HIV diagnosed are taking it, HIV treatment, having sex without a condom with partners who appear to be HIV negative is not a safe strategy. That is, my beloved reader, to bet your house and your wife on a dice match, three of them, 

It would be safer for seronegative people to have condomless sex with partners who are seronegative and on effective treatment.

But it is important to remember that while treatment for HIV prevents your partners from transmitting HIV, it does not protect any of you from other STDs !!!

What does this mean to you?

If you have a partner with HIV being treated and have an undetectable viral load, they will not transmit it, even if you don't use condoms. If you want to stop using Condoms ou PrEP (pre-exposure prophylaxis) In your relationship, it is probably a good idea to discuss this with your partner and ensure that both are comfortable with the decision.

Knowing that “undetectable is equal to non-transferable” is especially useful for people wishing to have a child. Couples in which one person has undetectable HIV and the other is HIV negative can have unprotected sex to conceive.

What about sexually transmitted infections (STDs)?

It is very important to remember that while a sexual partner's HIV treatment protects you from HIV, it will not protect you from other sexually transmitted infections (STDs).

For this reason, sexual health exams and reproductive are recommended.

Does HIV treatment always mean that people have an undetectable viral load?


Not everyone in HIV treatment there is a Undetectable viral load

After starting HIV treatment, it may take up to six months for a person's viral load to become undetectable. Until then, they can still be infectious.

 BHIVA recommends that you and your partner make no decision about discontinuing condom use until your viral load is undetectable for at least six months.

When starting HIV treatment, some people find that the first prescription drugs do not work well for them. But almost everyone finds a combination that works and the risk of treatment failure decreases over time.

Undetectable viral load may not become undetectable in the first semester!

People with an undetectable viral load sometimes experience what is called “blips”In your viral load. Your viral load increases from undetectable to a low but detectable level (for example, 120 copies / ml) before becoming undetectable again in the next test.

This should not be a cause for concern. In the PARTNER and Opposites Attract studies, 'undetectable' was defined as below 200 copies / ml. These studies have shown that transmission does not occur below this level.


I = I apply to all types of sex?


TasP, the treatment and prevention there is also space and clarification here!


An undetectable viral load prevents the transmission of HIV during oral sex, vaginal sex and anal sex. Condoms are not necessary to prevent HIV transmission when your partner's viral load is undetectable.

Does U = U apply to non-sexual transmission of HIV?

This page about HIV transmission during sex was translated into Portuguese by Cláudio Souza in 05 November 2019, from the original written by Gus Cairns which is in: Undetectable viral load and transmission - information for HIV-negative people

Revised on 2019. 

Review scheduled for in January 2022

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