Test

[reallyconcerned81]

Hello, Dr. I have made lots of questions about myself in this site. But now I have a different situation and need your help.

Me and my wife broke the relationship. But after one month we got together again. We did sex and I performed oral sex in her. After that she said she had intercourse with a stranger and she gave him oral sex without protection. She told me she had at the ocasion a sore cold. She does not want to talk about that anymore so I don't know if the guy ejaculeted in her mouth. I know the approach of this site is that oral sex is almost no risk situation, but authorities in Brazil keep saying that oral sex is a way of infection. So, I'm very scared. I want to be with her, but I'm worried. She told me that last week she took flu vaccine and this was around 15 days after the "risk" situation. So my question is: when she can get test for HIV? Just three months after the flu vaccine? But if she does a 4th generation test? She needs to wait three months even if she does a 4th generation test? Please, doctor, help me and tell me when she get test.
Thank you

[Edward W Hook, MD]

I will not debate your low risk with you.  You asked for my assessment and got it.

Flu vaccines do not lead to changes in the accuracy of HIV tests. she can test and anticipate relaible results.  EWH

[reallyconcerned81]

Doctor, the odds are low, but 1 case of infection  in 10000 exposures does not mean that the infection will happen in the last of 10000 exposures. It may happen in the first. But I hope I'm wrong and you are right.  

Doctor, the fact that my wife took the flu vaccine can make a false positive? She can test a month after the risk situation or three after the vaccine? Thank you

[Edward W Hook, MD]

Repeating a question that you have already received an answer to will not change the answer.  no matter how many time you ask the question, Oral sex, with or without a cold sore or cuts or sores in your mouth is still a very, very low risk exposure - estimated to be no higher than 1 infection in 10,000 exposures (which is like have oral sex with and infected person once a day for more than 27 years).  Since it is unknown if the person she had oral sex with even had HIV, the risk is even lower.  This is not something to worry about and, in my opinion not something to test after.  

The decision about testing however is up to you.  If you decide to test, the results of a 4th generation, combination HIV p24 antigen/HIV antibody test will be definitive 4 weeks after the exposure.  EWH