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Negative test after six months

Question: 

Hello I'm from Brazil. Excuse me for weak English. I'm a man. Exactly 6 months ago I had a sexual exposure with a program girl and the condom broke in vaginal sex. In the first 3 months I had almost all the symptoms of the acute phase of HIV. And in the first three months I ran several RNA and fourth-generation Elisa tests and all of them tested negative. The girl I met had a 3-generation test after three-and-a-half months, and hers also tested negative.
Now, after six months I have re-run another 4 generation Elisa test and it came out negative. But there were some rashes on my skin and impetigo was noted. I was afraid of being AIDS. What is the chance that I will be infected with HIV? Are the tests reliable? Thank you!

Answer: 

Hello,

Thank you for your inquiry. From what we gather from the question, you were asking about acquisition of HIV from protected vaginal intercourse with possible breakage of the condom and the validity of HIV tests. From the information given, this scenario is determined to be Low Risk . All of the practices assigned to this risk level present a potential for HIV transmission because they involve an exchange of body fluids. There have been a few reports of infection attributed to these activities when certain conditions are met (E.g. Due to improper use and potential breakage of the condom).

EIA (Enzyme Immunoassay) antibody 3rd generation ELISA Test: looks for antibodies that the body develops in response to an HIV infection, the window period is 4 weeks to 3 months, with up to 95% of infections being detected within 4-6 weeks. The ELISA tests are 99.8% accurate after 3 months.

4th Generation EIA(Duo or Ag/Ab) TEST: This test looks for antibodies and P24 protein antigens. Antigen (ag) test- P24 is detectable immediately after infection, & only for the first few weeks. The antibody (ab) test has a window period of 4-12 weeks. Most HIV specialists consider this "DUO" test conclusive at 6 weeks. Official HIV testing guidelines still recommend re-testing at 12 weeks for completely conclusive results. Accuracy is 99.9%

Since you tested negative for the above tests in the initial first three months and a re-test at 6 months was also negative we believe that these test results are conclusive.

HIV tends to mirror other viral infections or can be due or explained by other things, testing is really the only way to know. Since you have already been tested and the results were negative, the symptoms are most likely due to other conditions; with the assumption that you did not indulge in any high risk activity after the previous exposure.

Recommendation: No need for HIV re-test. Refer to Physician for more personalized answers.

Regards, AIDS Vancouver Helpline/Online, (Vardah)