Q and A

Question

Does PEP delay seroconversion?

Hi, I had an exposure in early October.

I took PEP (TDF + FTC + DTG) after 5 hours of the exposure. I did not accompany the doses with meals, I took them alone with water or some drink. Can this interfere or reduce its effectiveness?

Does PEP delay seroconversion in case of failure? At 5 weeks after finishing PEP swollen lymph glands in both armpit.

Answer

Hi, how are you doing?

PEP does have the potential to delay seroconversion.

As PEP works similar to medication used to manage HIV, PEP if unsuccessful can delay seroconversion.

This is why testing a minimum of 4 weeks after PEP is required. Seroconversion can occur 1-3 weeks after the course ends. Only 80% of those who do seroconvert in failed PEP will experience classical symptoms e.g., fatigue, fever, headache etc.

Five weeks after finishing PEP would be later than expected if this was really HIV. Swollen lymph nodes can arise from a number of infections, not only HIV. Is this symptom being managed by a doctor?

The combination you have taken can be consumed with or without food. This would not have impacted how well it worked as PEP.

If you have another question do ask,

Josh.

242 comments

  1. Josh Peasegood

    Hi Harrison, as your partner is on ART this is considered a low risk exposure and PEP is not required.

    For more information about transmission please see here: https://i-base.info/qa/factsheets/hiv-transmission-and-testing

  2. Harrison

    I had unprotected sex with someone on three occasions,the last being on Friday 24/5/24 just discovered that he is on ART yesterday and i did Oral Quick Hiv test it was negative ,my question
    Is there chances of exposure? and currently just having body aches and can PEP be effective or i go for PREP.

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