Question

Will my partner be at risk if my viral load is now 600 copies/mL?

5 March 2026. Related: All topics, CD4 and viral load, HIV transmission, PrEP, Southern Africa.

Hi hope u are good. I I went to my doctor for my check up and my viral load results came back as 600 copies/mL. Can I ask can I pass or infect someone with hiv? I am confused and I don’t understand? I live in South Africa.

Answer

Answer: Simon Collins

Hi there

Thanks for your question which is a complicated answer.

Technically, with a viral load of 600 there might eb a very small risk of transmission. If the viral load continues to increase though, the risk will also get steadily higher. This is why it would be better to try to get your viral load undetectable again, before relying on ART to protect your partner too.

First, can I ask what your doctor has said about your viral load.

Although 600 is still relatively low, it is high enough for HIV to develop drug resistance, unless it becomes undetectable again.

Your doctor should have talked to you about adherences and whether you were managina to talk all your meds on time. If not, then the doctor should have supported you to get back to a better pattern to not miss meds.

Also, to maybe take your meds with food in case this also helps.

This might be enough for your viral load to be undetectable when you next test in about one month.

If the next test is still detectable, especially if it has increased to higher than 1000 copies/mL, it might be important to use a different treatment.

This will depend on your treatment history, but South Africa has several treatment choices.

All the above information is about managing your viral load for your own health, and this is most important.

But you also asked about whether this level of viral load is a risk to your partner.

The studies showing that HIV meds protect your partner too were based on having a viral load lower than 200. So 600 is a bit higher. Although some studies show that the risk is still very low which viral load is less than 1000, your count might be getting much higher than this, without you realising it.

If, for example, your viral load increases to above 5000 before the next viral load test, then the risk to your partner will also have become higher.

Ideally, it is better to wait until your viral load becomes undetectable again, before relying on U=U.

Your partner could use PrEP though for their own protection, or to use condoms over this time.